US3058962A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coagulating vinylidene chloride copolymers
Assignee: WR Grace and Co
•
Filing: 1959-01-09
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Granted: 1962-10-16
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Expires: 1979-01-09
Abstract
No abstract record available.
Inventors
- 👤 Trofimow Alexei
- 👤 Philip K Isaacs
- 👤 Donald M Wacome
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:04
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/12; C08J3/16; C08J2327/00; C08J2327/02; C08J2327/04; C08J2327/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
42 words
THE METHOD OF COAGULATING A NORMALLY CRYSTALLINE VINYLIDENE CHLORIDE POLYMER FROM AN AQUEOUS EMULSION THEREOF COMPRISING ADDING THE AQUEOUS EMULSION AT A TEMPERATURE BETWEEN ABOUT 0*C. TO 10*C. TO AN AQUEOUS COAGULANT SALT SOLUTION AT A TEMPERATURE BETWEEN ABOUT 20*C. TO 30*C.
Claim 2
Independent Claim
42 words
THE METHOD OF COAGULATING A NORMALLY CRYSTALLINE VINYLIDENE CHLORIDE POLYMER FROM AN AQUEOUS EMULSION THEREOF COMPRISING ADDING THE AQUEOUS EMULSION AT A TEMPERATURE BETWEEN ABOUT 0*C. TO 10*C. TO AN AQUEOUS COAGULANT SALT SOLUTION AT A TEMPERATURE BETWEEN ABOUT 20*C. TO 30*C.
References Cited (Backward Citations)
US2530362A
Cited
US2921046A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-10-15 | 1966-04-16 | 1966-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-15 | 1970-04-16 | 1970-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-15 | 1974-04-16 | 1974-10-16 | $7700.00 | Window Closed / Lapsed |