Patent US3399181A successfully refreshed from Google Patents.
US3399181A
Expired / Lapsed
US
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Compounding and curing neoprene rubber
Assignee: Dow Chemical Co
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Filing: 1965-10-24
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Granted: 1968-08-27
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Expires: 1985-10-24
Abstract
No abstract record available.
Inventors
- 👤 Gary A Bornemann
- 👤 William F Mcilhenny
- 👤 Jay D Gensler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:28
CPC Classifications
C; C08; C08K; C08K9/00; C08K9/02; Y; Y10; Y10S; Y10S206/00; Y10S206/819
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
IN THE METHOD OF VULCANIZING A POLYCHLOROPRENE TYPE SYNTHETIC ELASTOMER WHEREIN MGO AND ZNO ARE BROUGHT INTO CONTACT WITH THE VULCANIZED ELASTOMER AND THE RESULTING REACTION MIXTURE CURED TO FORM A VULCANIZATE, THE IMPROVEMENT WHICH COMPRISES (A) PROVIDING A PARTICULATE COMPOSITE CONSISTING ESSENTIALLY OF ZNO NUCLEI HAVING A SURFACE COATING OF MGO, THE WEIGHT RATIO OF MGO:ZNO IN SAID COMPOSITE BEING SUITABLE FOR CURING A POLYCHLOROPRENE TYPE SYNTHETIC ELASTOMER, (B) ADMIXING SAID COMPOSITE WITH SAID UNVULCANIZED ELASTOMER, AND (C) HEAT-CURING THE RESULTING MIXTURE TO PRODUCE A VULCANIZATE.
Claim 2
Dependent Claim
87 words
IN THE METHOD OF VULCANIZING A POLYCHLOROPRENE TYPE SYNTHETIC ELASTOMER WHEREIN MGO AND ZNO ARE BROUGHT INTO CONTACT WITH THE VULCANIZED ELASTOMER AND THE RESULTING REACTION MIXTURE CURED TO FORM A VULCANIZATE, THE IMPROVEMENT WHICH COMPRISES (A) PROVIDING A PARTICULATE COMPOSITE CONSISTING ESSENTIALLY OF ZNO NUCLEI HAVING A SURFACE COATING OF MGO, THE WEIGHT RATIO OF MGO:ZNO IN SAID COMPOSITE BEING SUITABLE FOR CURING A POLYCHLOROPRENE TYPE SYNTHETIC ELASTOMER, (B) ADMIXING SAID COMPOSITE WITH SAID UNVULCANIZED ELASTOMER, AND (C) HEAT-CURING THE RESULTING MIXTURE TO PRODUCE A VULCANIZATE.
References Cited (Backward Citations)
US3310545A
Cited
US3310546A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-08-27 | 1972-02-26 | 1972-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-27 | 1976-02-26 | 1976-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-27 | 1980-02-26 | 1980-08-27 | $7700.00 | Window Closed / Lapsed |