US3830883A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerisation process
Assignee: BP Chemicals Ltd
•
Filing: 1971-03-09
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Granted: 1974-08-20
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Expires: 1991-03-09
Abstract
Abstract NON FILM FORMING POLYMERS ARE ISOLATED FROM AN AQUEOUS EMULSION STABILISED BY MEANS OF A CARBOXYLIC ACID SALT BY ACIDIFICATION AND AGGLOMERISATION OF POLYMER PARTICLES IN THE PRESENCE OF A BOLATILE SOFTENING AGENT AND A SUSPENDING AGENT.
Inventors
- 👤 A Sturt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 03:16
CPC Classifications
C; C08; C08F; C08F2/00; C08F2/04; C08F2/10; C08F259/00; C08F259/02; C08F259/04; Y; Y10; Y10S; Y10S526/00; Y10S526/91; Y10S526/911
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) | 1977-08-19 | 1978-02-18 | 1978-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-19 | 1982-02-18 | 1982-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-19 | 1986-02-18 | 1986-08-20 | $7700.00 | Window Closed / Lapsed |