US3331761A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photopolymerization of acrylic resins using ultraviolet light and triphenylphosphineas photopolymerization initiators
Assignee: Motors Liquidation Co
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Filing: 1964-06-25
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Granted: 1967-07-18
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Expires: 1984-06-25
Abstract
No abstract record available.
Inventors
- 👤 Tzu J Mao
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:37
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/027; G03F7/028; G03F7/029; C; C08; C08F; C08F2/00; C08F2/46; C08F20/00; C08F20/02; C08F20/10; C08F20/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
A PROCESS FOR THE PRODUCTION OF POLYMERIC MATERIAL WHICH COMPRISES IRRADIATING AN ACRYLIC MONOMER TAKEN FROM THE GROUP CONSISTING OF THE ESTERS OF ACRYLIC ACID AND THE ESTERS OFMETHACRYLIC ACID WITH ULTRAVIOLET LIGHT IN THE PRESENCE THEREIN OF A SMALL BUT EFFECTIVE AMOUNT OF TRIPHENYLPHOSPHINE SUFFICIENT FOR SAID PRODUCTION OF SAID POLYMERIC MATERIAL.
Claim 2
Dependent Claim
53 words
A PROCESS FOR THE PRODUCTION OF POLYMERIC MATERIAL WHICH COMPRISES IRRADIATING AN ACRYLIC MONOMER TAKEN FROM THE GROUP CONSISTING OF THE ESTERS OF ACRYLIC ACID AND THE ESTERS OFMETHACRYLIC ACID WITH ULTRAVIOLET LIGHT IN THE PRESENCE THEREIN OF A SMALL BUT EFFECTIVE AMOUNT OF TRIPHENYLPHOSPHINE SUFFICIENT FOR SAID PRODUCTION OF SAID POLYMERIC MATERIAL.
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) | 1970-07-17 | 1971-01-16 | 1971-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-17 | 1975-01-16 | 1975-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-17 | 1979-01-16 | 1979-07-18 | $7700.00 | Window Closed / Lapsed |