Patent US4052353B1 successfully refreshed from Google Patents.
US4052353B1
Expired / Lapsed
US
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Dispersions of water soluble polymers in oil
Assignee: —
•
Filing: 1975-09-15
•
Granted: 1990-01-30
•
Expires: 1995-09-15
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:10
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/02; C08J3/09; C08F; C08F8/00; C08G; C08G73/00; C08G73/02; C08G73/0206; C08G73/0213; C08G73/022; C08J2300/00; C08J2300/14; Y; Y10; Y10S; Y10S524/00; Y10S524/922
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) | 1993-01-29 | 1993-07-31 | 1994-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-01-29 | 1997-07-31 | 1998-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-01-29 | 2001-07-31 | 2002-01-30 | $7700.00 | Window Closed / Lapsed |