US3344099A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gasket-forming non-settling solventbased rubber compositions containing lecithin
Assignee: WR Grace and Co
•
Filing: 1964-12-21
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Granted: 1967-09-26
•
Expires: 1984-12-21
Abstract
No abstract record available.
Inventors
- 👤 Gerald F Cahill
- 👤 Irving J Arons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 03:59
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/49; C08K5/51; C08K5/52; C08K5/521
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
A GASKET-FORMING COMPOSITION CONSISTING ESSENTIALLY OF 100 PARTS BY WEIGHT OF A PEPTIZED ELASTOMERIC POLYMER OF 2-CHLORO-1.3-BUTADIENE DISSOLVED IN A VOLATILE ORGANIC SOLVENT, A CURING AGENT FOR SAID POLYMER, BETWEEN 80 AND 300 PARTS BY WEIGHT OF AN INORGANIC FILLER, AND BETWEEN ABOUT 1.5 AND 2.0 PARTS BY WEIGHT OF LECITHIN PER 100 PARTS BY WEIGHT OF FILLER, THE TOTAL SOLIDS CONCENTRATION OF SAID COMPOSITION RANGING BETWEEN ABOUT 50 AND 65% BY WEIGHT.
Claim 2
Dependent Claim
73 words
A GASKET-FORMING COMPOSITION CONSISTING ESSENTIALLY OF 100 PARTS BY WEIGHT OF A PEPTIZED ELASTOMERIC POLYMER OF 2-CHLORO-1.3-BUTADIENE DISSOLVED IN A VOLATILE ORGANIC SOLVENT, A CURING AGENT FOR SAID POLYMER, BETWEEN 80 AND 300 PARTS BY WEIGHT OF AN INORGANIC FILLER, AND BETWEEN ABOUT 1.5 AND 2.0 PARTS BY WEIGHT OF LECITHIN PER 100 PARTS BY WEIGHT OF FILLER, THE TOTAL SOLIDS CONCENTRATION OF SAID COMPOSITION RANGING BETWEEN ABOUT 50 AND 65% BY WEIGHT.
References Cited (Backward Citations)
FR724366A
Cited
US2067234A
Cited
US2201064A
Cited
US2373461A
Cited
US2428771A
Cited
US2874863A
Cited
US3244663A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-25 | 1971-03-27 | 1971-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-25 | 1975-03-27 | 1975-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-25 | 1979-03-27 | 1979-09-26 | $7700.00 | Window Closed / Lapsed |