US2537646A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anticorrosive treatment of chlorinated elastomer
Assignee: Bridgestone Firestone Inc
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Filing: 1949-01-25
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Granted: 1951-01-09
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Expires: 1969-01-25
Abstract
No abstract record available.
Inventors
- 👤 Elizabeth M Behrend
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:34
CPC Classifications
C; C08; C08C; C08C19/00; C08C19/28
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
78 words
PROCESS WHICH COMPRISES INCORPORATING, INTO 1000 PARTS BY WEIGHT OF A SOLUTION OF A CHLORINATED POLYBUTADIENE, THE ADDITIVE INGREDIENTS A LOWER ALKYL KETONE CONTAINING 3-9 AND THEREAFTER HEATING THE SOLUTION AT A SELECTED TEMPERATURE BETWEEN 25* C. AND 90* C. FOR A SELECTED TIME OF AT LEAST TWO HOURS, WITH THE PROVISO THAT THE MINIMUM QUANTITIES OF SAID ADDITIVE INGREDIENTS ARE TO BE MULTIPLIED BY THE FACTOR F TABULATED IN TABLE B FOR THE SELECTED TEMPERATURE AND TIME.
References Cited (Backward Citations)
US2316196A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-08 | 1954-07-10 | 1955-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-08 | 1958-07-10 | 1959-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-08 | 1962-07-10 | 1963-01-09 | $7700.00 | Window Closed / Lapsed |