Patent US3823027A successfully refreshed from Google Patents.
US3823027A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming opaque films
Assignee: PPG Industries Inc
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Filing: 1972-12-04
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Granted: 1974-07-09
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Expires: 1992-12-04
Abstract
Abstract A METHOD OF FORMING CURED OPAQUE FILMS, WITH OR WITHOUT THE USE OF PIGMENTS, COMPRISES SUBJECTING A COMPOSITION COMPRISING AN ACTINIC LIGHT SENSITIVE MATERIAL AND A SOLVENT HAVING A SPECIFIED SOLUBILITY WITH THE MATERIAL AND WHOCH IS PRESENT IN AN AMOUNT OF FROM ABOUT 10 PERCENT TO ABOUT 70 PERCENT BY WEIGHT OF THE COMPOSITION AND WHICH HAS A BOILING POINT OF AT LEAST ABOUT 115* F. OR HIGHER, TO ACTINIC LIGHT TO CURE SAID MATERIALS. THE RESULTING FILM CONTAINS MICROVOIDS WHICH CAUSES THE FILM TO OPAQUE.
Inventors
- 👤 K Miller
- 👤 C Hansen
- 👤 M Wismer
- 👤 C Pohan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:52
CPC Classifications
B; B05; B05D; B05D3/00; B05D3/06; B05D3/061; B05D3/065; B05D3/067; Y; Y10; Y10S; Y10S521/00; Y10S521/915
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) | 1977-07-08 | 1978-01-07 | 1978-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-08 | 1982-01-07 | 1982-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-08 | 1986-01-07 | 1986-07-09 | $7700.00 | Window Closed / Lapsed |