US2888346A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultra-violet absorbing compounds
Assignee: GAF Chemicals Corp
•
Filing: 1955-08-22
•
Granted: 1959-05-26
•
Expires: 1975-08-22
Abstract
No abstract record available.
Inventors
- 👤 Tulagin Vsevolod
- 👤 Walter F Hoffstadt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:41
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/815; G03C1/8155; A; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/40; A61K8/41; A61K8/411; A61K8/44; A61K8/49; A61K8/4906; A61K8/4926; A61K9/00; A61K9/20; A61K9/28; A61K9/2806; A61K9/2833; A61K9/286; A61K9/2866; A61Q; A61Q17/00; A61Q17/04; C; C08; C08B; C08B3/00; C08B3/22; C08K; C08K5/00; C08K5/16; C08K5/17; C08K5/18; G03C1/7614
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
37 words
A LIGHT SENSITIVE PHOTOGRAPHIC ELEMENT HAVING A LIGHT SENSITIVE SILVER HALIDE EMULSION, SAID EMULSION BEING OVERCOATED WITH A COLLOIDAL CARRIER HAVING UNIFORMLY DISPERSED THERETHROUGH AN XENYLAMINE SELECTED FROM THE CLASS CONSISTING OF THOSE OF THE FOLLOWING FORMULAE.
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) | 1962-05-25 | 1962-11-24 | 1963-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-25 | 1966-11-24 | 1967-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-25 | 1970-11-24 | 1971-05-26 | $7700.00 | Window Closed / Lapsed |