US2666751A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sponge rubber composition and method of making sponge rubber
Assignee: Aerojet Rocketdyne Holdings Inc
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Filing: 1949-09-16
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Granted: 1954-01-19
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Expires: 1969-09-16
Abstract
No abstract record available.
Inventors
- 👤 Harry L Wunderly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:21
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/04; C08J9/06; C08J9/10; C08J9/107; C08L; C08L21/00; C08J2321/00; C08J2321/02; Y; Y10; Y10S; Y10S521/00; Y10S521/909
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
THE PROCESS OF MAKING SPONGE RUBBER WHICH COMPRISES INCORPORATING INTO A PLASTIC VULCANIZABLE RUBBER COMPOUND CONTAINING SUITABLE CURING AGENTS, ONE TO FIFTEEN PARTS OF A DINITROSOPENTAMETHYLENE TETRAMINE, AND ONE-HALF TO TEN PARTS OF AN ORGANIC SULFONIC ACID, AND THEREAFTER HEATING THE PLASTIC RUBBER COMPOUND TO A CURING TEMPERATURE WHILE ALLOWING IT TO EXPAND.
Claim 2
Dependent Claim
53 words
THE PROCESS OF MAKING SPONGE RUBBER WHICH COMPRISES INCORPORATING INTO A PLASTIC VULCANIZABLE RUBBER COMPOUND CONTAINING SUITABLE CURING AGENTS, ONE TO FIFTEEN PARTS OF A DINITROSOPENTAMETHYLENE TETRAMINE, AND ONE-HALF TO TEN PARTS OF AN ORGANIC SULFONIC ACID, AND THEREAFTER HEATING THE PLASTIC RUBBER COMPOUND TO A CURING TEMPERATURE WHILE ALLOWING IT TO EXPAND.
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) | 1957-01-18 | 1957-07-20 | 1958-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-18 | 1961-07-20 | 1962-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-18 | 1965-07-20 | 1966-01-19 | $7700.00 | Window Closed / Lapsed |