US3330659A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic product and method of making same
Assignee: HECULES INCORPORATED A CORP OF DE
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Filing: 1964-01-29
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Granted: 1967-07-11
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Expires: 1984-01-29
Abstract
No abstract record available.
Inventors
- 👤 Wainer Eugene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:06
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/038; C; C08; C08F; C08F2/00; C08F2/46; C08F2/48; C08F2/50; C08F291/00; C08F291/18; G03F7/027; G03F7/032; Y; Y10; Y10S; Y10S430/00; Y10S430/167; Y10S430/168
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
34 words
A PROCESS OF PRODUCING A PREPOLYMER HAVING A MOLECULAR NUMBER OF BETWEEN ABOUT 1000 AND 3000 WHICH COMPRISES: PREPARING A MIXTURE CONSISTING OF PURIFIED VINYL MONOMER AND AN ACYLOIN COMPOUND REPRESENTED BY THE FORMULA
Claim 2
Dependent Claim
34 words
A PROCESS OF PRODUCING A PREPOLYMER HAVING A MOLECULAR NUMBER OF BETWEEN ABOUT 1000 AND 3000 WHICH COMPRISES: PREPARING A MIXTURE CONSISTING OF PURIFIED VINYL MONOMER AND AN ACYLOIN COMPOUND REPRESENTED BY THE FORMULA
Claim 3
Dependent Claim
97 words
A PHOTOSENSITIVE COMPOSITION WHICH COMPRISES: (1) A PREPOLYMER PRODUCED BY THE PROCESS OF CLAIM 1; (2) BETWEEN ABOUT 2 AND ABOUT 15 PARTS BY WEIGHT OF A VINYL COMONOMER FOR EVERY 100 PARTS OF TOTAL OF PREPOLYMER AND COMONOMER SAID VINYL COMONOMER BEING SELECTED FROM THE GROUP CONSISTING OF MONOMERS WHICH ARE SOLIDS AT ROOM TEMPERATURE AND LIQUIDS HAVING HIGH BOILING POINTS AND HAVING A VERY LOW VAPOR PRESSURE AT ROOM TEMPERATURE; AND (3) BETWEEN ABOUT 0.01 AND 3 PARTS BY WEIGHT OF A CROSSLINKING AGENT FOR EACH 100 PARTS BY WEIGHT TOTAL OF PREPOLYMER AND COMONOMER.
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) | 1970-07-10 | 1971-01-09 | 1971-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-10 | 1975-01-09 | 1975-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-10 | 1979-01-09 | 1979-07-11 | $7700.00 | Window Closed / Lapsed |