US2878503A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brush
Assignee: Rubber and Asbestos Corp
•
Filing: 1953-07-03
•
Granted: 1959-03-24
•
Expires: 1973-07-03
Abstract
No abstract record available.
Inventors
- 👤 Jerome L Been
- 👤 Martin M Grover
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:13
CPC Classifications
A; A46; A46B; A46B3/00; A46B3/02
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
53 words
BRISTLES EMBEDDED IN THE HEAT-HARDENED BLEND OF A FUSIBLE, THERMOSETTING PHENOL-ALDEHYDE RESIN AND A NORMALLY LIQUID NON-RUBBERY COPOLYMER OF A CONJUGATED DIENE HAVING 4 TO 6 CARBON ATOMS WITH A MEMBER OF GROUP CONSISTING OF ACRYLONITRILE AND ALPHA ALKYL SUBSTITUTED ACRYLONITRILE; SAID COPOLYMER HAVING A VISCOSITY AT 25*C. OF LESS THAN 2,000,000 CENTIPOISES.
References Cited (Backward Citations)
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Cited
US2469132A
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US2508908A
Cited
US2552904A
Cited
FR953239A
Cited
US2521361A
Cited
US2647019A
Cited
US2638460A
Cited
US2725981A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-23 | 1962-09-22 | 1963-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-23 | 1966-09-22 | 1967-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-23 | 1970-09-22 | 1971-03-24 | $7700.00 | Window Closed / Lapsed |