US3431203A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Friction bearing of thermoplastic material and process of making same
Assignee: Hoechst AG
•
Filing: 1967-04-05
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Granted: 1969-03-04
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Expires: 1987-04-05
Abstract
No abstract record available.
Inventors
- 👤 Werner Hartmann
- 👤 Dietrich Schleede
- 👤 Felix Schulde
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:45
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/36; C08J9/40; F; F16; F16C; F16C33/00; F16C33/02; F16C33/04; F16C33/06; F16C33/10; F16C33/1025; F16C33/103; F16C33/104; F16C33/20; F16C33/201; C08J2323/00; C08J2323/02; F16C2202/00; F16C2202/02; F16C2202/10; F16C2208/00; F16C2208/20; F16C2208/76; Y; Y10; Y10S; Y10S521/00; Y10S521/909
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2246092A
Cited
US3017371A
Cited
US3213071A
Cited
US3190842A
Cited
US3224967A
Cited
US3194759A
Cited
US3288615A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-03 | 1972-09-02 | 1973-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-03 | 1976-09-02 | 1977-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-03 | 1980-09-02 | 1981-03-04 | $7700.00 | Window Closed / Lapsed |