US3582340A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the antistatic treatment of light-sensitive silver halide photographic materials with phosphine oxide
Assignee: Konica Minolta Inc
•
Filing: 1968-07-02
•
Granted: 1971-06-01
•
Expires: 1988-07-02
Abstract
Abstract A PHOSPHINE OXIDE HAVING THE GENERAL FORMULA O=P(-R1)(-R2)-R3 OR O=P(-R1)(-R2)-X-P(=O)(-R1)-R2 WHEREIN R1, R2 AND R3 ARE INDIVIDUALLY AN ALKYL, ARYL OR ARALKYL GROUP AND X IS AN ALKYLENE GROUP, IS INCORPORATED INTO A LIGHT SENSITIVE SILVER HALIDE PHOTOGRAPHIC MATERIAL TO IMPART THERETO AN ANTISTATIC EFFECT.
Inventors
- 👤 Yoshimi Kuwabara
- 👤 Sadao Sugita
- 👤 Kenichi Koda
- 👤 Kunihiro Fujiwara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:45
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/85; G03C1/856; Y; Y10; Y10S; Y10S430/00; Y10S430/167
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) | 1974-05-31 | 1974-11-30 | 1975-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-31 | 1978-11-30 | 1979-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-31 | 1982-11-30 | 1983-06-01 | $7700.00 | Window Closed / Lapsed |