US3704128A
Expired / Lapsed
US
⏱️ 0.0 years remaining
N-ylide compounds as antistatic agents in photography
Assignee: Konica Minolta Inc
•
Filing: 1970-03-11
•
Granted: 1972-11-28
•
Expires: 1990-03-11
Abstract
Abstract WHEREIN R1, R2 AND R3 ARE INDIVIDUALLY AN ALKYL GROUP, AN ARALKYL GROUP OR A GROUP DERIVED FOR ANY OF SAID GROUPS, AND R4 IS AN ALKYL GROUP, AN ARYL GROUP OR A HETERO RING. R1-N(+)(-R2)(-R3)-N(-)-CO-R4 A NEW USE, AS AN ANTISTATIC AGENT FOR LIGHT-SENSITIVE SILVER HALIDE PHOTOGRAPHIC MATERIAL, OR AN N-UYLIDE REPRESENTED BY THE GENERAL FORMULA
Inventors
- 👤 Ken Ichi Koda
- 👤 Shoji Kikuchi
- 👤 Tsuneo Wada
- 👤 Yoshimi Kuwabara
- 👤 Akira Horikoshi
- 👤 Kensaku Tanimura
- 👤 Sadao Sugita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:19
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/60; C07D213/78; C07D213/86; G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/34; G03C1/76; G03C1/85; G03C5/00; G03C5/26; G03C5/29; G03C5/305
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) | 1975-11-28 | 1976-05-29 | 1976-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-28 | 1980-05-29 | 1980-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-28 | 1984-05-29 | 1984-11-28 | $7700.00 | Window Closed / Lapsed |