US2811750A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of friction material
Assignee: Raybestos Manhattan Inc
•
Filing: 1954-11-05
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Granted: 1957-11-05
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Expires: 1974-11-05
Abstract
No abstract record available.
Inventors
- 👤 Henry J Cofek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:31
CPC Classifications
B; B22; B22F; B22F7/00; B22F7/02; B22F3/00; B22F3/18; B32; B32B; B32B27/00; F; F16; F16D; F16D69/00; F16D69/02; F16D69/021; F16D69/022; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249924; Y10T428/24994; Y10T428/24995; Y10T428/31504; Y10T428/31652
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
THE METHOD OF MAKING FRICTION MATERIAL WHICH COMPRISES, ROLLING GRANULA FRICTION COMROSITION PARTICL MATERIAL COMPRISED OF A MIXTURE OF ASBESTOS OF LONG FIBER CONTENT WHEREIN A MAJORITY OF THE FIBERS ARE RETAINED ON A 10-MESH SCREEN HAVING A SCREEN OPENING OF .053 INCH, HEAT HARDENABLE ORGANIC BINDER MATERIAL AND BINDER SOLVENT, BETWEEN SPACED OPPOSITELY ROTATING SURFACES WHILE LATERALLY CONFINING THE MATERIAL, TO COMPACT AND SHAPE THE PARTICLES INTO THE FORM OF A DENSE CONTINUOUS STRIP, SUB-
Claim 2
Independent Claim
76 words
THE METHOD OF MAKING FRICTION MATERIAL WHICH COMPRISES, ROLLING GRANULA FRICTION COMROSITION PARTICL MATERIAL COMPRISED OF A MIXTURE OF ASBESTOS OF LONG FIBER CONTENT WHEREIN A MAJORITY OF THE FIBERS ARE RETAINED ON A 10-MESH SCREEN HAVING A SCREEN OPENING OF .053 INCH, HEAT HARDENABLE ORGANIC BINDER MATERIAL AND BINDER SOLVENT, BETWEEN SPACED OPPOSITELY ROTATING SURFACES WHILE LATERALLY CONFINING THE MATERIAL, TO COMPACT AND SHAPE THE PARTICLES INTO THE FORM OF A DENSE CONTINUOUS STRIP, SUB-
References Cited (Backward Citations)
US2070600A
Cited
GB464176A
Cited
US2185333A
Cited
US2309571A
Cited
US2428771A
Cited
US2554128A
Cited
US2539631A
Cited
US2534607A
Cited
US2620320A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-04 | 1961-05-06 | 1961-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-04 | 1965-05-06 | 1965-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-04 | 1969-05-06 | 1969-11-05 | $7700.00 | Window Closed / Lapsed |