US2548685A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photopolymerization process and compositions
Assignee: Alexander H Kerr & Co Inc
•
Filing: 1946-12-21
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Granted: 1951-04-10
•
Expires: 1966-12-21
Abstract
No abstract record available.
Inventors
- 👤 Carrol C Sachs
- 👤 Bond John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:18
CPC Classifications
C; C08; C08F; C08F2/00; C08F2/46
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
A PROCESS OF PHOTOPOLYMERIZATION, WHICH COMPRISES IRRADIATING WITH ACTINICALLY ACTIVE LIGHT A CATALYSTICALLY PHOTOPOLYMERIZABLE ETHYLENICALLY UNSATURATED RESINIFIABLE COMPOUND HAVING A METHYLENE GROUP (CH2) ATTACHED BY A DOUBLE BOND TO A CARBON CONTAINING DISPERSED THEREIN A MINOR PROPORTION OF A PHOTOPOLYMERIZATION CATALYST CONSISTING OF A COMPOUND HAVING THE GENERAL FORMULA
Claim 2
Dependent Claim
49 words
A PROCESS OF PHOTOPOLYMERIZATION, WHICH COMPRISES IRRADIATING WITH ACTINICALLY ACTIVE LIGHT A CATALYSTICALLY PHOTOPOLYMERIZABLE ETHYLENICALLY UNSATURATED RESINIFIABLE COMPOUND HAVING A METHYLENE GROUP (CH2) ATTACHED BY A DOUBLE BOND TO A CARBON CONTAINING DISPERSED THEREIN A MINOR PROPORTION OF A PHOTOPOLYMERIZATION CATALYST CONSISTING OF A COMPOUND HAVING THE GENERAL FORMULA
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-09 | 1954-10-09 | 1955-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-09 | 1958-10-09 | 1959-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-09 | 1962-10-09 | 1963-04-10 | $7700.00 | Window Closed / Lapsed |