US2581915A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized vinyl chloride resin films
Assignee: Bridgestone Firestone Inc
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Filing: 1947-10-17
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Granted: 1952-01-08
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Expires: 1967-10-17
Abstract
No abstract record available.
Inventors
- 👤 Radcliffe Milton Ray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:08
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/36; C08K5/37
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
73 words
PROCESS WHICH COMPRISES CALENDERING, AT TEMPERATURES FROM 315* F. TO 350* F., A COMPOSITION COMPRISING A RESIN SELECTED FROM THE GROUP CONSISTING OF POLYMERS OF VINYL CHLORIDE AND COPOLYMERS THEREOF WITH UP TO 20%, BASED ON THE WEIGHT OF COPOLYMERS, OF OTHER UNSATURATED COMPOUNDS COPOLYMERIZABLE THEREWITH, SAID FILM CONTAINING AS A STABILIZER FROM 0.25% TO 5.0% OF A CADMIUM ALKYL MERCAPTIDE IN WHICH THE ALKYL GROUPS CONTAIN FROM 5 TO 20 CARBON ATOMS.
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) | 1955-01-07 | 1955-07-09 | 1956-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-07 | 1959-07-09 | 1960-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-07 | 1963-07-09 | 1964-01-08 | $7700.00 | Window Closed / Lapsed |