US3761455A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for coagulating rubber latex
Assignee: Kureha Corp
•
Filing: 1971-10-07
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Granted: 1973-09-25
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Expires: 1991-10-07
Abstract
Abstract COAGULATION OF RUBBER LATEX TO OBTAIN RUBBER PARTICLES OF DESIRED SIZE CAN BE ATTAINED BY ALTERNATE OR SIMULTAEOUS ADDITION OF ACIDIC AND ALKALINE SUBSTANCES TO THE LATEX MAINTAINED AT A SPECIFIC PH VALUE.
Inventors
- 👤 Y Ochiai
- 👤 T Tanaka
- 👤 H Yusa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:01
CPC Classifications
C; C08; C08C; C08C1/00; C08C1/14; Y; Y10; Y10S; Y10S528/00; Y10S528/931; Y10S528/934; Y10S528/936
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) | 1976-09-24 | 1977-03-26 | 1977-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-24 | 1981-03-26 | 1981-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-24 | 1985-03-26 | 1985-09-25 | $7700.00 | Window Closed / Lapsed |