US2687977A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-sealing fuel cells
Assignee: Uniroyal Inc
•
Filing: 1951-06-26
•
Granted: 1954-08-31
•
Expires: 1971-06-26
Abstract
No abstract record available.
Inventors
- 👤 Roscoe H Gerke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:54
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/14; Y; Y10; Y10S; Y10S428/00; Y10S428/912; Y10T; Y10T442/00; Y10T442/30; Y10T442/3472; Y10T442/3602; Y10T442/3642
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
IN A BULLET-SEALING FUEL CELL, A SEALANT LAYER COMPRISING A VULCANIZATE OF A NON-CRYSTALLIZABLE SYNTHETIC RUBBER SELECTED FROM THE GROUP CONSISTING OF HOMOPOLYMERS OF ALIPHATIC CONJUGATED DIOLEFIN HYDROCARBONS AND COPOLYMERS OF SUCH HYDROCARBONS WITH COPOLYMERIZABLE MONOOLEFINIC COMPOUNDS, SAID SYNTHETIC RUBBER HAVING IN THE UNCURED STATE A COHESIVE ENERGY DENSITY OF FROM 56 TO 72 AND, AS THE SOLE VULCANIZING AGENT THEREFOR, AN ORGANIC PEROXIDE IN AMOUNT CONTAINING FROM 0.0025 TO 0.04 PART OF ACTIVE OXYGEN PER 100 PARTS OF SAID SYNTHETIC RUBBER, SAID VULCANIZATE HAVING A MODULUS OF FROM 25 TO 150 POUNDS PER SQUARE INCH AT 400% ELONGATION.
Claim 2
Dependent Claim
99 words
IN A BULLET-SEALING FUEL CELL, A SEALANT LAYER COMPRISING A VULCANIZATE OF A NON-CRYSTALLIZABLE SYNTHETIC RUBBER SELECTED FROM THE GROUP CONSISTING OF HOMOPOLYMERS OF ALIPHATIC CONJUGATED DIOLEFIN HYDROCARBONS AND COPOLYMERS OF SUCH HYDROCARBONS WITH COPOLYMERIZABLE MONOOLEFINIC COMPOUNDS, SAID SYNTHETIC RUBBER HAVING IN THE UNCURED STATE A COHESIVE ENERGY DENSITY OF FROM 56 TO 72 AND, AS THE SOLE VULCANIZING AGENT THEREFOR, AN ORGANIC PEROXIDE IN AMOUNT CONTAINING FROM 0.0025 TO 0.04 PART OF ACTIVE OXYGEN PER 100 PARTS OF SAID SYNTHETIC RUBBER, SAID VULCANIZATE HAVING A MODULUS OF FROM 25 TO 150 POUNDS PER SQUARE INCH AT 400% ELONGATION.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-30 | 1958-03-01 | 1958-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-30 | 1962-03-01 | 1962-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-30 | 1966-03-01 | 1966-08-31 | $7700.00 | Window Closed / Lapsed |