US2845378A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming a frictional element and product
Assignee: Diamond Shamrock Corp
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Filing: 1955-02-07
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Granted: 1958-07-29
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Expires: 1975-02-07
Abstract
No abstract record available.
Inventors
- 👤 John E Dereich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:54
CPC Classifications
B; B32; B32B; B32B27/00; F; F16; F16D; F16D69/00; F16D69/02; F16D69/021; F16D69/022; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31652; Y10T428/31663; Y10T428/31667
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
48 words
A FRICTION ELEMENT INCLUDING A FRICTIONAL SURFACE LAYER COMPRISING A HARD, HEAT-RESISTANT MIXTURE OF ASBETOS FILLER AND A COHYDROLYZATE OF A MIXTURE OF 80 MOL PERCENT PHENYL SILICON TRICHLORIDE AND 20 MOLD PERCENT ETHYL SILICON TRICHLORIDE, SAID LAYER HAVING BONDED THERETO A BACKING LAYER OF A PHENOLIC 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) | 1961-07-28 | 1962-01-27 | 1962-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-28 | 1966-01-27 | 1966-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-28 | 1970-01-27 | 1970-07-29 | $7700.00 | Window Closed / Lapsed |