US2659677A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rubber processing composition
Assignee: Phillips Petroleum Co
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Filing: 1949-08-15
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Granted: 1953-11-17
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Expires: 1969-08-15
Abstract
No abstract record available.
Inventors
- 👤 Walter A Schulze
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:45
CPC Classifications
C; C08; C08L; C08L9/00; C08L21/00; Y; Y10; Y10S; Y10S524/00; Y10S524/925
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
36 words
A RUBBER VULCANIZING COMPOSITION COMPRISING AN ADMIXTURE OF ONE PART BY WEIGHT OF A LIQUID POLYMER OF CONJUGATED DIOLEFIN HAVING NOT MORE THAN 6 CARBON ATOMS PER MOLECULE WITH 0.3 TO 1 PART OF ROSIN ACID.
References Cited (Backward Citations)
US2035455A
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US2461349A
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US2457335A
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US2437481A
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US2477654A
Cited
US2472437A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-16 | 1957-05-18 | 1957-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-16 | 1961-05-18 | 1961-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-16 | 1965-05-18 | 1965-11-17 | $7700.00 | Window Closed / Lapsed |