Patent US3703492A successfully refreshed from Google Patents.
US3703492A
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US
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Process for the preparation of aqueous emulsions of water-resistant vinyl acetate-ethylene copolymers
Assignee: Denka Co Ltd
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Filing: 1970-04-21
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Granted: 1972-11-21
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Expires: 1990-04-21
Abstract
Abstract A PROCESS FOR THE PRODUCTION OF EHTYLENE-VINYL ACETATE COPOLYMER EMULSIONE COMPRISING COPOLYMERIZING VINYL ACETATE AND ETHYLENE IN THE PRESENCE OF ROSIN AT A TEMPERATURE NOT EXCEEDING 65*C. AND AT A PRESURE OF 10-100 KG./CM.2 GAUGE.
Inventors
- 👤 Shiro Masuda
- 👤 Takashi Ohkubo
- 👤 Yu Furukawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 02:07
CPC Classifications
C; C08; C08F; C08F289/00; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1054
Claims Analysis
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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) | 1975-11-21 | 1976-05-22 | 1976-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-21 | 1980-05-22 | 1980-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-21 | 1984-05-22 | 1984-11-21 | $7700.00 | Window Closed / Lapsed |