US2880153A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photopolymerization process
Assignee: Akzo Nobel UK PLC
•
Filing: 1957-01-28
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Granted: 1959-03-31
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Expires: 1977-01-28
Abstract
No abstract record available.
Inventors
- 👤 Arnold A Hiltz
- 👤 Edward G Lendrat
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:33
CPC Classifications
C; C08; C08F; C08F2/00; C08F2/46
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
37 words
A PROCESS OF POLYMERIZING A VINYL MONOMER COMPRISING PHOTOPOLYMERIZING SAID MONOMER IN THE PRESENCE OF A CATALYST CONSISTING ESENTIALLY OF A SIMPLE SALT OF A GROUP VIII METAL, SAID METAL BEING PRESENT IN A REDUCED VALENCE STATE.
Claim 2
Dependent Claim
37 words
A PROCESS OF POLYMERIZING A VINYL MONOMER COMPRISING PHOTOPOLYMERIZING SAID MONOMER IN THE PRESENCE OF A CATALYST CONSISTING ESENTIALLY OF A SIMPLE SALT OF A GROUP VIII METAL, SAID METAL BEING PRESENT IN A REDUCED VALENCE STATE.
References Cited (Backward Citations)
GB455742A
Cited
US2344785A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-30 | 1962-09-29 | 1963-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-30 | 1966-09-29 | 1967-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-30 | 1970-09-29 | 1971-03-31 | $7700.00 | Window Closed / Lapsed |