US3663655A
Expired / Lapsed
US
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Polymerisation process
Assignee: BP Chemicals Ltd
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Filing: 1970-05-14
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Granted: 1972-05-16
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Expires: 1990-05-14
Abstract
Abstract PROCESS COMPRISING MIXING A NON-FILM FORMING POLYMER IN LATEX FORM WITH A MONOMER, DESTROYING THE LATEX EMULSIFYING AGENT SO THAT THE LATEX POLYMER PARTICLES PASS INTO THE MONOMER WITHOUT SUBSTANTIAL CHANGE IN SIZE AND POLYMERISING THE MONOMER, PREFERABLY UNDER SUSPENSION CONDITIONS.
Inventors
- 👤 Alan Charles Sturt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:57
CPC Classifications
C; C08; C08F; C08F291/00; C08F259/00; C08F259/02; C08F259/04; Y; Y10; Y10S; Y10S525/00; Y10S525/915; Y10S526/00; Y10S526/909; 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) | 1975-05-16 | 1975-11-15 | 1976-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-16 | 1979-11-15 | 1980-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-16 | 1983-11-15 | 1984-05-16 | $7700.00 | Window Closed / Lapsed |