US2875047A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photopolymerization with the formation of coherent plastic masses
Assignee: Individual
•
Filing: 1955-01-19
•
Granted: 1959-02-24
•
Expires: 1975-01-19
Abstract
No abstract record available.
Inventors
- 👤 Oster Gerald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:37
CPC Classifications
B; B32; B32B; B32B17/00; B32B17/06; B32B17/10; B32B17/10005; B32B17/10165; B32B17/10431; B32B17/10467; B32B17/10486; B29; B29C; B29C65/00; B29C65/02; B29C65/14; B29C65/1403; B29C65/1409; B29C65/48; B29C65/4805; B29C65/483; B29C65/4845; B29C66/00; B29C66/70; B29C66/73; B29C66/737; B29C66/7379; B29C66/73793; B32B17/10366; C; C08; C08F; C08F2/00; C08F2/46; D; D06; D06M; D06M14/00; D06M14/18; D21; D21H; D21H17/00; D21H17/03; D21H17/05; D21H17/18; D21H17/19; E; E04; E04C; E04C2/00; E04C2/02; E04C2/26; G; G03; G03F; G03F7/00; G03F7/004; G03F7/027; G03F7/028; G03F7/031; B29C65/1406; B29C66/71; Y; Y10; Y10S; Y10S430/00; Y10S430/1053; Y10S430/1055; Y10S430/114; Y10S430/116; Y10S430/117; Y10S430/127; Y10S430/167
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
PROCESS FOR THE POLYMERIZATION OF VINYL MONOMERS FOR THE PRODUCTION OF COHERENT MASSES WHICH COMPRISES IRRADIATING WITH VISIBLE LIGHT, A LIQUID SOLUTION CONTAINING AT LEAST 20% BY WEIGHT OF A VINYL MONOMER POLYMERIZABLE TO A SOLID SOLUBLE POLYMER, AN ORGANIC PHOTOREDUCIBLE DYE AND A REDUCING AGENT HAVING A REDUCTION POTENTIAL INCAPABLE OF REDUCING SAID DYE IN THE ABSENCE OF LIGHT BUT OF SUFFICIENT STRENGTH TO REDUCE THE PHOTO EXCITED DYE, SAID DYE AND REDUCING AGENT FORMING A STABLE SYSTEM IN THE ABSENCE OF LIGHT WHICH UNDERGOES REDUCTION OF DYE UPON EXPOSURE TO VISIBLE LIGHT, SAID LIQUID SOLUTION COMPRISING A SOLVENT FOR SAID SOLUBLE VINYL POLYMER, SAID DYE AND REDUCING AGENT BEING PRESENT IN SUFFICIENT AMOUNT TO PRODUCE FREE RADICALS FOR THE POLYMERIZATION OF SAID POLYMERIZABLE VINYL MONOMERS WHEN IRRADIATED WITH VISIBLE LIGHT, AND THEREBY TRANSFORMING SAID SOLUTION INTO A COHERENT MASS.
Claim 2
Dependent Claim
141 words
PROCESS FOR THE POLYMERIZATION OF VINYL MONOMERS FOR THE PRODUCTION OF COHERENT MASSES WHICH COMPRISES IRRADIATING WITH VISIBLE LIGHT, A LIQUID SOLUTION CONTAINING AT LEAST 20% BY WEIGHT OF A VINYL MONOMER POLYMERIZABLE TO A SOLID SOLUBLE POLYMER, AN ORGANIC PHOTOREDUCIBLE DYE AND A REDUCING AGENT HAVING A REDUCTION POTENTIAL INCAPABLE OF REDUCING SAID DYE IN THE ABSENCE OF LIGHT BUT OF SUFFICIENT STRENGTH TO REDUCE THE PHOTO EXCITED DYE, SAID DYE AND REDUCING AGENT FORMING A STABLE SYSTEM IN THE ABSENCE OF LIGHT WHICH UNDERGOES REDUCTION OF DYE UPON EXPOSURE TO VISIBLE LIGHT, SAID LIQUID SOLUTION COMPRISING A SOLVENT FOR SAID SOLUBLE VINYL POLYMER, SAID DYE AND REDUCING AGENT BEING PRESENT IN SUFFICIENT AMOUNT TO PRODUCE FREE RADICALS FOR THE POLYMERIZATION OF SAID POLYMERIZABLE VINYL MONOMERS WHEN IRRADIATED WITH VISIBLE LIGHT, AND THEREBY TRANSFORMING SAID SOLUTION INTO A COHERENT MASS.
References Cited (Backward Citations)
US1433806A
Cited
US2068879A
Cited
US2423520A
Cited
US2562641A
Cited
US2486190A
Cited
US2448828A
Cited
US2521902A
Cited
US2706699A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-23 | 1962-08-25 | 1963-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-23 | 1966-08-25 | 1967-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-23 | 1970-08-25 | 1971-02-24 | $7700.00 | Window Closed / Lapsed |