US2855303A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photosensitive system
Assignee: Individual
•
Filing: 1955-10-24
•
Granted: 1958-10-07
•
Expires: 1975-10-24
Abstract
No abstract record available.
Inventors
- 👤 Chalkley Lyman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:52
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/72; G03C1/73; G03C1/732; Y; Y10; Y10S; Y10S204/00; Y10S204/901
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
48 words
A SOLID COMPOSITION COMPRISING A COMBINATION PHOTOSENSITIVE ONLY TO ULTRAVIOLET AND SHORTER WAVE LENGTHS CONSISTING OF A HYDROCOLLOID AND A HYDROPHILIC TRIPHENYLACETONITRILE COMPOUND HAVING AT LEAST ONE RADICAL SELECTED FROM THE GROUP CONSISTING OF HYDROXY AND AMINO RADICALS AT A POSITION PARA TO THE CENTRAL METHANE CARBON ATOM.
Claim 2
Dependent Claim
48 words
A SOLID COMPOSITION COMPRISING A COMBINATION PHOTOSENSITIVE ONLY TO ULTRAVIOLET AND SHORTER WAVE LENGTHS CONSISTING OF A HYDROCOLLOID AND A HYDROPHILIC TRIPHENYLACETONITRILE COMPOUND HAVING AT LEAST ONE RADICAL SELECTED FROM THE GROUP CONSISTING OF HYDROXY AND AMINO RADICALS AT A POSITION PARA TO THE CENTRAL METHANE CARBON ATOM.
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) | 1961-10-06 | 1962-04-07 | 1962-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-06 | 1966-04-07 | 1966-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-06 | 1970-04-07 | 1970-10-07 | $7700.00 | Window Closed / Lapsed |