Patent US3853690A successfully refreshed from Google Patents.
US3853690A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal substrates bonded with thermosetting resin compositions containing fibrillated polytetrafluoroethylene
Assignee: Wyeth Holdings LLC
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Filing: 1972-06-23
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Granted: 1974-12-10
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Expires: 1992-06-23
Abstract
Abstract Various substrates are bonded together with adhesives comprising a thermosetting resin containing from about 1 percent to about 40 percent of polytetrafluoroethylene. The resultant articles exhibit excellent structural properties and find use in such areas as the aerospace industry.
Inventors
- 👤 F Mcgarry
- 👤 T Suen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:08
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/04; B32B15/08; B32B3/00; B32B3/10; B32B3/12; C; C09; C09J; C09J201/00; B32B2311/00; B32B2311/18; B32B2311/24; B32B2311/30; B32B2315/00; B32B2315/08; B32B2315/085; B32B2327/00; B32B2327/12; B32B2327/18; B32B2361/00; B32B2363/00; B32B2367/00; B32B2398/00; B32B2398/10; C08; C08L; C08L2666/00; C08L2666/02; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31511; Y10T428/31515; Y10T428/31522; Y10T428/3154; Y10T428/31544
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
45 words
A STRUCTURAL ARTICLE OF MANUFACTURE COMPRISING AT LEAST TWO METAL SUBSTRATES BONDED TOGETHER WITH AN ADHESIVE CONSISTING ESSENTIALLY OF A MIXTURE OF 81) A THERMOSETTING RESIN AND (2) FROM ABOUT 1% TO ABOUT 40%, BY WEIGHT, BASED ON THE WEIGHT OF (1), OF FIBRILLATED POLYTETRAFLUOROETHYLENE.
Claim 2
Dependent Claim
45 words
A STRUCTURAL ARTICLE OF MANUFACTURE COMPRISING AT LEAST TWO METAL SUBSTRATES BONDED TOGETHER WITH AN ADHESIVE CONSISTING ESSENTIALLY OF A MIXTURE OF 81) A THERMOSETTING RESIN AND (2) FROM ABOUT 1% TO ABOUT 40%, BY WEIGHT, BASED ON THE WEIGHT OF (1), OF FIBRILLATED POLYTETRAFLUOROETHYLENE.
Claim 3
Dependent Claim
14 words
An article according to claim 1 wherein said thermosetting resin is an epoxy resin.
Claim 4
Dependent Claim
14 words
An article according to claim 1 wherein said thermosetting resin is a polyester resin.
Claim 5
Dependent Claim
14 words
An article according to claim 1 wherein said thermosetting resin is an aminoplast resin.
Claim 6
Dependent Claim
14 words
An article according to claim 1 wherein said thermosetting resin is an alkyd resin.
Claim 7
Dependent Claim
14 words
An article according to claim 1 wherein said thermosetting resin is a phenolic resin.
Claim 8
Independent Claim
60 words
A method for the production of structural articles of manufacture comprising contacting opposing surfaces of at least two metal substrates with an adhesive composition consisting essentially of a mixture of (1) a thermosetting resin and (2) from about 1 percent to about 40 percent, by weight, based on the weight of (1), of fibrillated polytetrafluoroethylene and then curing said adhesive.
Claim 9
Independent Claim
60 words
A method for the production of structural articles of manufacture comprising contacting opposing surfaces of at least two metal substrates with an adhesive composition consisting essentially of a mixture of (1) a thermosetting resin and (2) from about 1 percent to about 40 percent, by weight, based on the weight of (1), of fibrillated polytetrafluoroethylene and then curing said adhesive.
Claim 10
Dependent Claim
14 words
A method according to claim 7 wherein said thermosetting resin is an epoxy resin.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-09 | 1978-06-10 | 1978-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-09 | 1982-06-10 | 1982-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-09 | 1986-06-10 | 1986-12-10 | $7700.00 | Window Closed / Lapsed |