AlliedSignal
A diversified American aerospace, automotive and engineering group formed in 1985 and absorbed into Honeywell in 1999.
Last updated October 14, 2026
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Overview
AlliedSignal was a diversified American industrial group with major activities in aerospace, automotive components, engineered materials, specialty chemicals and industrial technology. The company was formed in 1985 when Allied Corporation merged with The Signal Companies, bringing together businesses with roots in chemicals, petroleum, automotive equipment, aerospace systems and manufacturing. Allied's heritage extended back to the Allied Chemical & Dye Corporation, created in 1920 through the consolidation of five chemical companies. The business later became Allied Chemical Corporation and then Allied Corp. Allied expanded into aerospace through its 1983 merger with Bendix Corporation. Signal's history began with Signal Gasoline Company, founded in 1922. Its later combination with the Garrett Corporation in 1964 gave Signal a substantial aerospace presence, while the acquisition of Mack Truck in 1967 broadened its industrial and automotive portfolio. The 1985 Allied-Signal combination made aerospace the new company's largest business sector. Its aerospace activities included aircraft lighting, wheels and braking systems, auxiliary power units, avionics, regional and business aircraft engines, environmental control systems, flight recorders and jet-engine fuel-control systems. These operations served aircraft manufacturers, airlines, defense-related customers and other industrial users. AlliedSignal also maintained a broad automotive portfolio. Its products and brands included Fram air, fuel and oil filters; Autolite spark plugs; Prestone antifreeze; and Garrett turbochargers, whose origins were associated with the former AiResearch and Garrett businesses. The company also produced engineered materials, polymers, electronic products and specialized chemicals, and operated Federal Manufacturing and Technology facilities for the United States Department of Energy. During the 1990s, AlliedSignal sought to become a more integrated and technology-focused industrial company. In 1993, it removed the hyphen from its name, changing Allied-Signal to AlliedSignal to emphasize the integration of the two predecessor organizations. From 1992 to 1997, it also substantially reduced and reorganized its supplier base, eliminating weaker suppliers and concentrating purchasing among a smaller group of suppliers that received additional development and training. On June 7, 1999, AlliedSignal acquired Honeywell in a transaction valued at approximately $14.8 billion. Although AlliedSignal was the acquirer, the combined company adopted Honeywell's name and logo because Honeywell had greater brand recognition. AlliedSignal therefore ceased to operate as an independent public company, and its aerospace, automotive, materials and industrial businesses became part of the enlarged Honeywell organization.
History
AlliedSignal's history combined two substantial American industrial lineages. Allied's predecessor, Allied Chemical & Dye Corporation, was established in 1920 through the merger of five chemical companies: Barrett Paving Materials, General Chemical Company, National Aniline & Chemical Company, Semet-Solvay Company and Solvay Process Company. The consolidation was encouraged by concerns about American dependence on German chemical production during and after the First World War, with chemist William Nichols and financier Eugene Meyer among the figures associated with the combination. The company acquired Eltra Corporation in 1979, changed its name to Allied Chemical Corporation in 1958 and adopted the shorter Allied Corp. name in 1981. Its 1983 merger with Bendix Corporation marked an important expansion into aerospace and advanced industrial technology. Bendix brought a significant aerospace and automotive presence, helping Allied move beyond its traditional chemical base. The second predecessor, The Signal Companies, originated as Signal Gasoline Company, founded by Samuel B. Mosher in 1922. It became Signal Oil & Gas in 1928 as the business broadened. By the 1950s, Signal was the largest independent oil company on the United States' West Coast and had interests connected with transportation companies including American President Lines and Flying Tiger Line. In 1964, Signal merged with Garrett Corporation, an aerospace company. Signal subsequently acquired Mack Truck in 1967, and in 1968 adopted The Signal Companies as its corporate name. Its original oil operations were sold to Burmah Oil in 1974 for approximately $480 million. Allied and Signal merged in 1985, and the combined organization adopted the name Allied-Signal on September 19 of that year. The merger created a diversified industrial company in which aerospace represented the largest business area. Its portfolio included aircraft systems, avionics, aircraft engines, auxiliary power units, braking equipment, automotive components, chemicals, polymers, electronic products and engineered materials. During the 1990s, AlliedSignal worked to simplify and integrate its operations. It changed the corporate spelling to AlliedSignal in 1993, removing the hyphen to reinforce a single-company identity. The organization also undertook a major supplier rationalization between 1992 and 1997, reducing its supplier base from approximately 10,000 to approximately 2,000. The effort focused on removing poorer-performing suppliers while developing the capabilities of suppliers retained in the network. AlliedSignal's automotive portfolio included the Fram, Autolite, Prestone and Garrett brands. Bendix had acquired Fram and Autolite in 1973, while Prestone was added in the late 1990s. Aerospace products included aircraft lighting, wheels and braking systems, auxiliary power units, avionics, regional and business aircraft engines, environmental control systems, flight recorders and jet-engine fuel-control systems. The company also operated Federal Manufacturing and Technology facilities for the United States Department of Energy. On June 7, 1999, AlliedSignal acquired Honeywell. The transaction was valued at approximately $14.8 billion, and the combined company adopted Honeywell's name and visual identity because Honeywell was considered the more recognizable brand. AlliedSignal therefore ceased to exist as an independent listed company, although many of its businesses and product brands continued within Honeywell.
- 1999
Honeywell acquisition ends AlliedSignal's independent existence
[1]AlliedSignal acquired Honeywell for approximately $14.8 billion and adopted the Honeywell name and identity.
- 1997
Supplier-network reduction is completed
[1]The supplier rationalization program had reduced the supply base from approximately 10,000 suppliers to approximately 2,000.
- 1993
The company becomes AlliedSignal
[1]The hyphen was removed from Allied-Signal to promote a unified corporate identity.
- 1992
Supplier-base rationalization begins
[1]AlliedSignal began a multi-year effort to reduce and improve its supplier network.
- 1985
AlliedSignal is created
[1]Allied Corp. and The Signal Companies merged, and the combined company adopted the Allied-Signal name on September 19.
- 1983
Allied merges with Bendix
[1]The Bendix combination strengthened Allied's aerospace and automotive capabilities before the later merger with Signal.
- 1979
Allied acquires Eltra Corporation
[1]Allied expanded its industrial holdings through the acquisition of Eltra Corporation.
- 1974
Signal sells its original oil operations
[1]Signal sold its original oil business to Burmah Oil for approximately $480 million, continuing its transition toward a broader industrial portfolio.
- 1967
Signal acquires Mack Truck
[1]Signal broadened its industrial and transportation portfolio through the acquisition of Mack Truck for approximately $85 million.
- 1964
Signal merges with Garrett Corporation
[1]The transaction gave Signal a major aerospace business and connected its corporate history with the Garrett aerospace operations.
Products and positioning
A diversified industrial and high-technology manufacturing group with a strong aerospace center of gravity and established automotive, materials and chemical businesses.
Aerospace
Aerospace systems and components
AlliedSignal's largest business area supplied equipment and systems for aircraft manufacturers, airlines and other aerospace customers. The portfolio included aircraft lighting, aircraft wheels and braking systems, auxiliary power units, avionics, regional and business aircraft engines, environmental control systems, flight recorders and jet-engine fuel-control systems. These activities reflected the company's evolution from a broad chemical and industrial group into a major aerospace technology supplier.
Automotive components
Fram Filters
Fram was part of AlliedSignal's automotive product portfolio and supplied air, fuel and oil filters for vehicle applications. The brand served both original-equipment and replacement markets and represented the group's continuing presence in automotive maintenance products.
Automotive components
Autolite Spark Plugs
Autolite supplied spark plugs for automotive applications. AlliedSignal inherited the brand through Bendix, which had acquired both Autolite and Fram in 1973. Autolite formed part of the company's consumer-facing automotive aftermarket portfolio before AlliedSignal became part of Honeywell.
Automotive fluids
Prestone Antifreeze
Prestone was AlliedSignal's automotive antifreeze and coolant brand, acquired in the late 1990s. It complemented the company's filters and spark plugs by giving AlliedSignal a recognizable automotive maintenance-products presence in the replacement market.
Automotive and aerospace components
Garrett turbochargers
Garrett turbochargers grew out of the Garrett and AiResearch engineering heritage associated with Signal's aerospace expansion. The business supplied turbocharging technology for automotive applications while retaining links to the broader Garrett engineering tradition.
Industrial materials
Engineered materials and specialty chemicals
AlliedSignal maintained businesses in polymers, electronic products, engineered materials and specialized chemicals. These operations extended the chemical and materials foundations inherited from Allied and served industrial, manufacturing and technology-oriented applications.
Government and industrial technology services
Federal Manufacturing and Technology
AlliedSignal operated Federal Manufacturing and Technology facilities for the United States Department of Energy. This activity represented the group's role as a contractor supporting government manufacturing, engineering and technology requirements.
Brand decisions
1999
Acquire Honeywell and adopt its identityM&ABackground
AlliedSignal and Honeywell had complementary industrial and aerospace technology portfolios, with avionics identified as the principal area of overlap.
Action taken
On June 7, 1999, AlliedSignal acquired Honeywell in a transaction valued at approximately $14.8 billion and adopted Honeywell's name and corporate identity.
Aftermath
AlliedSignal ceased to operate as an independent public company, while its businesses were incorporated into the enlarged Honeywell organization.
Transaction value. $14.8 billion (1999)
1993
Adopt the AlliedSignal nameStrategyBackground
Management sought to communicate that the Allied and Signal businesses had become an integrated single company.
Action taken
The company removed the hyphen from Allied-Signal and adopted AlliedSignal as its corporate name.
Aftermath
The new spelling became the company's principal identity until the 1999 Honeywell transaction.
1992
Rationalize the supplier baseStrategyBackground
AlliedSignal sought greater purchasing efficiency and stronger supplier performance across its manufacturing operations.
Action taken
Between 1992 and 1997, the company reduced its supplier base from approximately 10,000 to approximately 2,000, removing weaker suppliers and developing those retained.
Aftermath
The program produced a more concentrated supply network and formed part of AlliedSignal's broader operational-integration effort.
1985
Combine Allied and SignalM&ABackground
The two companies possessed complementary positions in chemicals, aerospace, automotive products and industrial manufacturing.
Action taken
Allied Corp. merged with The Signal Companies and established Allied-Signal, with aerospace becoming the combined group's largest business sector.
Aftermath
The combination created the corporate platform that later became AlliedSignal and accelerated Allied's shift toward aerospace and technology-intensive manufacturing.
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