US2861934A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for effecting photopolymerization
Assignee: Monsanto Chemicals Ltd
•
Filing: 1953-07-01
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Granted: 1958-11-25
•
Expires: 1973-07-01
Abstract
No abstract record available.
Inventors
- 👤 Roland J Kern
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:37
CPC Classifications
C; C08; C08F; C08F2/00; C08F2/46
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
32 words
IN THE PHOTOPOLYMERIZATION OF ACRYLONITRILE, THE IMPROVEMENT WHICH COMPRISES CONDUCTING SAID PHOTOPOLYMERIZATION IN THE PRESENCE OF A SMALL AMOUNT OF PHOTOSENSITIZER CONSISTING ESSENTIALLY OF A BENZENE THIOL EFFECTIVE TO PHOTOSENSITIZE SAID POLYMERIZATION.
Claim 2
Dependent Claim
32 words
IN THE PHOTOPOLYMERIZATION OF ACRYLONITRILE, THE IMPROVEMENT WHICH COMPRISES CONDUCTING SAID PHOTOPOLYMERIZATION IN THE PRESENCE OF A SMALL AMOUNT OF PHOTOSENSITIZER CONSISTING ESSENTIALLY OF A BENZENE THIOL EFFECTIVE TO PHOTOSENSITIZE SAID POLYMERIZATION.
References Cited (Backward Citations)
US2383319A
Cited
GB654026A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-24 | 1962-05-26 | 1962-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-24 | 1966-05-26 | 1966-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-24 | 1970-05-26 | 1970-11-25 | $7700.00 | Window Closed / Lapsed |