US3438994A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methine dyes containing tricyanoalkyl-substituted phosphorus
Assignee: Gevaert Photo Producten NV
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Filing: 1964-07-06
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Granted: 1969-04-15
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Expires: 1984-07-06
Abstract
No abstract record available.
Inventors
- 👤 Henri Depoorter
- 👤 Jean Marie Nys
- 👤 Andre Emile Van Dormael
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:12
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/0664; G03G5/0666; G03G5/0668; G03G5/067; C; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/535; C07F9/5352; C07F9/54; C07F9/5435; C07F9/547; C07F9/5475; C07F9/6527; C07F9/653; C07F9/65324; C07F9/6536; C07F9/6539; C07F9/6541; C07F9/6558; C07F9/65583; C08; C08K; C08K5/00; C08K5/49; C08K5/50; C09; C09B; C09B23/00; C09B23/0008; C09B23/005; C09B23/0091; C09B23/10; C09B23/16; C09B23/168; C09B57/00; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/08; G03C1/10; G03C1/12; G03C1/125; G03G5/0601; G03G5/062
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
10 words
A METHINE DYE SALT CORRESPONDING TO THE FOLOWING GENERAL FORMULA:
Claim 2
Dependent Claim
10 words
A METHINE DYE SALT CORRESPONDING TO THE FOLOWING GENERAL FORMULA:
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-14 | 1972-10-14 | 1973-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-14 | 1976-10-14 | 1977-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-14 | 1980-10-14 | 1981-04-15 | $7700.00 | Window Closed / Lapsed |