US2582829A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of rubber products
Assignee: Phillips Petroleum Co
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Filing: 1948-12-03
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Granted: 1952-01-15
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Expires: 1968-12-03
Abstract
No abstract record available.
Inventors
- 👤 Harbison Lynn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:19
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/18; C08K3/20; C08K3/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
IN THE PROCESS OF MAKING A RUBBER PRODUCT WHEREIN THE RUBBER MIX, CONTAINING AN ORGANIC ACCELERATOR OF VULCANIZATION, SULFUR AND A FURNACE CARBON BLACK HAVING A PH OF FROM 8.6 TO 10.5, IS PREFORMED AND VULCANIZED AND WHEREIN THE PROBLEM OF SCORCH IS ENCOUNTERED THAT IMPROVEMENT WHICH COMPRISES ADDING FROM 0.25 TO 4.5 PARTS OF ZINC PEROXIDE PER 100 PARTS OF RUBBER TO SAID RUBBER MIX AS THE EFFECTIVE SCORCH PREVENTIVE.
Claim 2
Dependent Claim
71 words
IN THE PROCESS OF MAKING A RUBBER PRODUCT WHEREIN THE RUBBER MIX, CONTAINING AN ORGANIC ACCELERATOR OF VULCANIZATION, SULFUR AND A FURNACE CARBON BLACK HAVING A PH OF FROM 8.6 TO 10.5, IS PREFORMED AND VULCANIZED AND WHEREIN THE PROBLEM OF SCORCH IS ENCOUNTERED THAT IMPROVEMENT WHICH COMPRISES ADDING FROM 0.25 TO 4.5 PARTS OF ZINC PEROXIDE PER 100 PARTS OF RUBBER TO SAID RUBBER MIX AS THE EFFECTIVE SCORCH PREVENTIVE.
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) | 1955-01-14 | 1955-07-16 | 1956-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-14 | 1959-07-16 | 1960-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-14 | 1963-07-16 | 1964-01-15 | $7700.00 | Window Closed / Lapsed |