US3741768A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Imbibition anionic dye image mordanted with n-hetero homopolymer
Assignee: Individual
•
Filing: 1971-05-14
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Granted: 1973-06-26
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Expires: 1991-05-14
Abstract
Abstract AN IMBIBITION DYE IMAGE IS PRODUCED BY IMAGEWISE APPLYING AN ANIONIC DYE SOLUTION TO A HYDROPHILIC COLLOID LAYER MORDANTED WITH A HOMOPOLYMER CONTAINING THE FOLLOWING RECURRING UNITS: (1-A,1-B,3-(-),5-((-)CH2-)PIPERIDINIUM) M(-) WHEREIN EACH OF A AND B REPRESENTS A HYDROGEN ATOM, A C1-C5 LOWER ALKYL GROUP UNSUBSTITUTED OR SUBSTITUTED WITH A HYDROXYL, CYANO ACETATE OR CARBONAMIDE GROUP, OR A AND B REPRESENTS TOGETHER THE NECESSARY ATOMS TO A CLOSE A MORPHOLINE, A PIPERIDINE OR A PYRROLIDINE NUCLEUS, AND M-REPRESENTS A PHOTOGRAPHICALLY INORT ANION.
Inventors
- 👤 Paesschen A Van
- 👤 R Roosen
- 👤 R Verbrugghe
- 👤 D Timmerman
- 👤 Hoof A Van
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 03:59
CPC Classifications
C; C07; C07C; C07C255/00; G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/34; G03C1/76; G03C1/825; G03C1/835; G03C7/00; G03C7/22; G03C7/25; G03C7/30; G03C7/388; G03C7/3882; Y; Y10; Y10S; Y10S430/00; Y10S430/142
Claims Analysis
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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) | 1976-06-25 | 1976-12-25 | 1977-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-25 | 1980-12-25 | 1981-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-25 | 1984-12-25 | 1985-06-26 | $7700.00 | Window Closed / Lapsed |