Patent US2808445A successfully refreshed from Google Patents.
US2808445A
Expired / Lapsed
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Vulcanization of rubber and product obtained thereby
Assignee: Monsanto Chemicals Ltd
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Filing: 1953-09-17
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Granted: 1957-10-01
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Expires: 1973-09-17
Abstract
No abstract record available.
Inventors
- 👤 Amico John J D
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:26
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/0008; C08K5/0025
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
21 words
THE METHOD OF VULCANIZING A SULFUR-VULCANIZABLE RUBBER WHICH COMPRISES HEATING A SULFUR-VULCANIZABLE RUBBER, SULFUR AND A THIAZOLESULFENAMIDE OF THE STRUCTURAL FORMULA
Claim 2
Independent Claim
21 words
THE METHOD OF VULCANIZING A SULFUR-VULCANIZABLE RUBBER WHICH COMPRISES HEATING A SULFUR-VULCANIZABLE RUBBER, SULFUR AND A THIAZOLESULFENAMIDE OF THE STRUCTURAL FORMULA
References Cited (Backward Citations)
US2342545A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-30 | 1961-04-01 | 1961-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-30 | 1965-04-01 | 1965-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-30 | 1969-04-01 | 1969-10-01 | $7700.00 | Window Closed / Lapsed |