US3100150A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stencil screen coating comprising polyvinyl alcohol, polyvinyl acetate, and a light sensitizing agent
Assignee: OI Glass Inc
•
Filing: 1960-11-02
•
Granted: 1963-08-06
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Expires: 1980-11-02
Abstract
No abstract record available.
Inventors
- 👤 Andrew B Chismar
- 👤 Elmer W Kmetz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:03
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/12; C; C09; C09D; C09D131/00; C09D131/02; C09D131/04; C08; C08L; C08L29/00; C08L29/02; C08L29/04; Y; Y10; Y10S; Y10S101/00; Y10S101/37; Y10S430/00; Y10S430/1053; Y10S430/1055; Y10S430/106; Y10S430/11
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
A STENCIL SCREEN COATING FOR USE IN FILLING THE VOIDS OF A STENCIL SCREEN AND SUBSEQUENTLY HAVING PORTIONS THEREOF REMOVED ACCORDING TO PHOTOGRAPHIC METHODS TO FORM A PRESELECTED PATTERN OF VOIDS ON SAID SCREEN, CONSISTING ESSENTIALLY OF (A) AN AQUEOUS SOLUTION OF A POLYVINYL ACETATE HOMOPOLYMER WHEREIN FROM ABOUT 86% TO 100% OF THE CARBOXYL GROUPS ARE HYDROLYZED TO OH GROUPS, (B) A LIGHT-SENSITIZING AGENT TO PERMIT PHOTOGRAPHIC METHOD PRODUCTION OF THE DESIRED PATTERN BY RENDERING WATER-INSOLUBLE THAT PORTION OF SAID COATING EXPOSED TO LIGHT AND (C) AN EMULSION OF AN UNHYDROLYZED HOMOPOLYMER OF POLYVINYL ACETATE AS THE FILM FORMING INGREDIENTS, THE AMOUNT OF (C) TO (A) BEING FROM 1:1 TO 1:25 PARTS BY WEIGHT.
Claim 2
Dependent Claim
115 words
A STENCIL SCREEN COATING FOR USE IN FILLING THE VOIDS OF A STENCIL SCREEN AND SUBSEQUENTLY HAVING PORTIONS THEREOF REMOVED ACCORDING TO PHOTOGRAPHIC METHODS TO FORM A PRESELECTED PATTERN OF VOIDS ON SAID SCREEN, CONSISTING ESSENTIALLY OF (A) AN AQUEOUS SOLUTION OF A POLYVINYL ACETATE HOMOPOLYMER WHEREIN FROM ABOUT 86% TO 100% OF THE CARBOXYL GROUPS ARE HYDROLYZED TO OH GROUPS, (B) A LIGHT-SENSITIZING AGENT TO PERMIT PHOTOGRAPHIC METHOD PRODUCTION OF THE DESIRED PATTERN BY RENDERING WATER-INSOLUBLE THAT PORTION OF SAID COATING EXPOSED TO LIGHT AND (C) AN EMULSION OF AN UNHYDROLYZED HOMOPOLYMER OF POLYVINYL ACETATE AS THE FILM FORMING INGREDIENTS, THE AMOUNT OF (C) TO (A) BEING FROM 1:1 TO 1:25 PARTS BY WEIGHT.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-08-05 | 1967-02-04 | 1967-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-08-05 | 1971-02-04 | 1971-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-08-05 | 1975-02-04 | 1975-08-06 | $7700.00 | Window Closed / Lapsed |