Patent US3812203A successfully refreshed from Google Patents.
US3812203A
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Chloroprene rubber composition and method of producing the same
Assignee: Denka Co Ltd
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Filing: 1972-05-09
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Granted: 1974-05-21
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Expires: 1992-05-09
Abstract
Abstract CHLOROPRENE RUBBER COMPOSITION CONSISTING MAINLY OF A MIXTURE OF 100 PARTS BY WEIGHT OF CHLOROPRENE POLYMER AND 0.1 TO 20 PARTS BY WEIGHT OF POLYVINYL ALCOHOL. THE CHLOROPRENE RUBBER COMPOSITION CAN BE USED ALONE AS AN ADHESIVE. AN ADHESIVE COMPOSITION HAVING A MORE EXCELLENT STABILITY AGAINST THE LAYER SEPARATION IS OBTAINED BY ADDING A METAL OXIDE, AND A MODIFIED PHENOL RESIN AND CONVENTIONAL ADDITIVES TO THE RUBBER COMPOSITION.
Inventors
- 👤 S Matsuzawa
- 👤 T Kadowaki
- 👤 K Itoyama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:39
CPC Classifications
C; C08; C08L; C08L11/00; C09; C09J; C09J111/00; C08K; C08K3/00; C08K3/18; C08K3/20; C08K3/22; C08L2666/00; C08L2666/02; C08L29/00; C08L29/02; C08L29/04; C08L61/00; C08L61/04; C08L61/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-05-20 | 1977-11-19 | 1978-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-20 | 1981-11-19 | 1982-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-20 | 1985-11-19 | 1986-05-21 | $7700.00 | Window Closed / Lapsed |