US2718536A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of rubber articles
Assignee: Dunlop Rubber Co Ltd
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Filing: 1951-02-21
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Granted: 1955-09-20
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Expires: 1971-02-21
Abstract
No abstract record available.
Inventors
- 👤 Jones Frederick Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:09
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/02; C08J2321/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
A PROCESS FOR THE PRODUCTION OF RUBBER ARTICLES WHICH COMPRISES FORMING A HEAT-VULCANIZABLE NATURAL RUBBER LATEX MIX CONTAINING SULPHUR, A N-SUBSTITUTED DITHIOCARBAMATE VULCANIZATION ACCELERATOR AND AS AN ACTIVATOR THEREFOR A METAL ALKYL XANTHATE VULCANIZATION ACCELERATOR IN AMOUNT FROM 1 PART TO 20 PARTS BY WEIGHT OF THE METAL ALKYL XANTHATE FOR EVERY 100 PARTS BY WEIGHT OF THE DITHIOCARBAMATE, ADDING A NATURAL RUBBER LATEX GELLING AGENT TO THE MIX, SHAPING AND GELLING THE MIX AND THEN VULCANIZING THE RUBBER.
Claim 2
Dependent Claim
79 words
A PROCESS FOR THE PRODUCTION OF RUBBER ARTICLES WHICH COMPRISES FORMING A HEAT-VULCANIZABLE NATURAL RUBBER LATEX MIX CONTAINING SULPHUR, A N-SUBSTITUTED DITHIOCARBAMATE VULCANIZATION ACCELERATOR AND AS AN ACTIVATOR THEREFOR A METAL ALKYL XANTHATE VULCANIZATION ACCELERATOR IN AMOUNT FROM 1 PART TO 20 PARTS BY WEIGHT OF THE METAL ALKYL XANTHATE FOR EVERY 100 PARTS BY WEIGHT OF THE DITHIOCARBAMATE, ADDING A NATURAL RUBBER LATEX GELLING AGENT TO THE MIX, SHAPING AND GELLING THE MIX AND THEN VULCANIZING THE RUBBER.
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) | 1958-09-19 | 1959-03-21 | 1959-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-09-19 | 1963-03-21 | 1963-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-09-19 | 1967-03-21 | 1967-09-20 | $7700.00 | Window Closed / Lapsed |