Patent US3671235A successfully refreshed from Google Patents.
US3671235A
Expired / Lapsed
US
⏱️ 0.0 years remaining
C5 to c16 aliphatic alcohols used as defoaming agents in zinc oxide-resin dispersions
Assignee: Ricoh Co Ltd
•
Filing: 1968-12-03
•
Granted: 1972-06-20
•
Expires: 1988-12-03
Abstract
Abstract A LIGHT SENSITIVE MATERIAL FOR ELECTROPHOTOGRAPHY COMPRISING A BASE MATERIAL AND A LIGHT SENSITIVE LAYER PROVIDED THEREON, IN WHICH THE LIGHT SENSITIVE LAYER COMPRISES A WATER SOLUBLE RESIN AND AN ALIPHATIC ALCOHOL HAVING A DEFOAMING CHARACTERISTIC AND WHICH HAS THE FUNCTION OF IMPROVING THE ELECTROPHOTOGRAPHIC CHARACTERISTICS.
Inventors
- 👤 Nario Yamaguchi
- 👤 Sakae Shimizu
- 👤 Kazuo Tubuko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:07
CPC Classifications
B; B01; B01D; B01D19/00; B01D19/02; B01D19/04; B01D19/0404; G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/05; G03G5/0503; G03G5/051; G03G5/0514
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1975-06-20 | 1975-12-20 | 1976-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-20 | 1979-12-20 | 1980-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-20 | 1983-12-20 | 1984-06-20 | $7700.00 | Window Closed / Lapsed |