Patent US3814702A successfully refreshed from Google Patents.
US3814702A
Expired / Lapsed
US
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Composition for promoting the polymerization of photopolymerizable masses
Assignee: Progil SARL
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Filing: 1971-12-13
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Granted: 1974-06-04
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Expires: 1991-12-13
Abstract
Abstract A COMPOSITION COMPRISING FROM 10 TO 95 WT. PERCENT BENZOIN, FROM 20 TO 0.5 WT. PERCENT ORGANIC ACID AND FROM 70 TO 1 WT. PERCENT SOLVENT IS A PHOTOSENSITIZER FOR THE POLYMERIZATION OF MONOMERS.
Inventors
- 👤 L Bourdon
- 👤 J Lehureau
- 👤 E Simon
- 👤 P Borrel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:52
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/027; G03F7/028; G03F7/031; C; C08; C08F; C08F283/00; C08F283/01
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-03 | 1977-12-03 | 1978-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-03 | 1981-12-03 | 1982-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-03 | 1985-12-03 | 1986-06-04 | $7700.00 | Window Closed / Lapsed |