US2936276A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photochemical compositions and processes utilizing salts of para-amino triphenylacetonitriles
Assignee: Individual
•
Filing: 1957-06-25
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Granted: 1960-05-10
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Expires: 1977-06-25
Abstract
No abstract record available.
Inventors
- 👤 Chalkley Lyman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:10
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/72; G03C1/73; G03C1/732; Y; Y10; Y10S; Y10S204/00; Y10S204/902; Y10S204/912
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
80 words
A PHOTOCHEMICAL PROCESS COMPRISING EXPOSING A SYSTEM CONTAINING A COLORLESS AMINE ADDITION SALT COMPOSED OF AN ACID COMBINED WITH AT LEAST ONE PARA-AMINO GROUP OF A PARA-AMINO TRIPHENYLACETONITRILE AND A PHOTOACTIVATION FOR SAID SALT TO ULTRAVIOLET ENERGY OF A WAVE LENGTH ABSORBED BY SAID SALT TO CAUSE A PHOTOCHEMICAL REACTION TO TAKE PLACE, SAID SYSTEM BEING SUBSTANTIALLY FREE OF THE BASIC FORM OF SAID PARA-AMINO TRIPHENYLACETONITRILE, AND FORMING A SUBSTANTIALLY PERMANENT COLORED COMPOUND FROM SAID IRRADIATED AND PHOTOCHEMICALLY REACTED SALT.
Claim 2
Dependent Claim
80 words
A PHOTOCHEMICAL PROCESS COMPRISING EXPOSING A SYSTEM CONTAINING A COLORLESS AMINE ADDITION SALT COMPOSED OF AN ACID COMBINED WITH AT LEAST ONE PARA-AMINO GROUP OF A PARA-AMINO TRIPHENYLACETONITRILE AND A PHOTOACTIVATION FOR SAID SALT TO ULTRAVIOLET ENERGY OF A WAVE LENGTH ABSORBED BY SAID SALT TO CAUSE A PHOTOCHEMICAL REACTION TO TAKE PLACE, SAID SYSTEM BEING SUBSTANTIALLY FREE OF THE BASIC FORM OF SAID PARA-AMINO TRIPHENYLACETONITRILE, AND FORMING A SUBSTANTIALLY PERMANENT COLORED COMPOUND FROM SAID IRRADIATED AND PHOTOCHEMICALLY REACTED SALT.
Claim 3
Dependent Claim
52 words
A PHOTOSENSITIVE PRODUCT COMPRISING A SUPPORTING BASE HAVING A COATING APPLIED THERETO, SAID COATING CONTAINING AN AMINE SALT COMPOSED OF AN ACID COMBINED WITH AT LEAST ONE PARA-AMINO GROUP OF A PARA-AMINO TRIPHENYLACETONITRILE AND A PHOTOACTIVATOR FOR SAID SALT, SAID COATING BEING SUBSTANTIALLY FREE OF THE BASIC FORM OF SAID PARAAMINO TRIPHENYLACETONITRILE.
Claim 4
Dependent Claim
52 words
A PHOTOSENSITIVE PRODUCT COMPRISING A SUPPORTING BASE HAVING A COATING APPLIED THERETO, SAID COATING CONTAINING AN AMINE SALT COMPOSED OF AN ACID COMBINED WITH AT LEAST ONE PARA-AMINO GROUP OF A PARA-AMINO TRIPHENYLACETONITRILE AND A PHOTOACTIVATOR FOR SAID SALT, SAID COATING BEING SUBSTANTIALLY FREE OF THE BASIC FORM OF SAID PARAAMINO TRIPHENYLACETONITRILE.
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) | 1963-05-10 | 1963-11-09 | 1964-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-10 | 1967-11-09 | 1968-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-10 | 1971-11-09 | 1972-05-10 | $7700.00 | Window Closed / Lapsed |