US3787338A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aqueous dispersions of finely divided lubricants in polyamide acid
Assignee: General Electric Co
•
Filing: 1972-02-25
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Granted: 1974-01-22
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Expires: 1992-02-25
Abstract
Abstract Substantially uniform aqueous dispersions are provided of a finely divided solid, such as a pigment or a lubricant, for example, polytetrafluoroethylene particles, in a polyamide acid. These aqueous polyamide acid dispersions can be employed to make polyimide-metal composites exhibting improved lubricity.
Inventors
- 👤 D Skelly
- 👤 B Wagner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:15
CPC Classifications
C; C08; C08G; C08G73/00; C08G73/06; C08G73/10; C08G73/14; C09; C09D; C09D5/00; C09D5/44; C09D5/4419; C09D5/4461; Y; Y10; Y10S; Y10S524/00; Y10S524/901
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3179631A
Cited
US3366563A
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US3434942A
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US3582481A
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US3448068A
Cited
US3541036A
Cited
US3687824A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-21 | 1977-07-23 | 1978-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-21 | 1981-07-23 | 1982-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-21 | 1985-07-23 | 1986-01-22 | $7700.00 | Window Closed / Lapsed |