Patent US3621442A successfully refreshed from Google Patents.
US3330784A
Expired / Lapsed
US
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Optical effect in acrylate polymers by an internal foamed structure
Assignee: GAF Chemicals Corp
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Filing: 1964-03-17
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Granted: 1967-07-11
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Expires: 1984-03-17
Abstract
No abstract record available.
Inventors
- 👤 Harry D Anspon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:27
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/02; Y; Y10; Y10S; Y10S264/00; Y10S264/13; Y10S521/00; Y10S521/915; Y10T; Y10T428/00; Y10T428/13; Y10T428/1352; Y10T428/1376
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
42 words
A SOLID MASS OF HALO-ACRYLATE RESIN COMPRISING AT LEAST ONE TRANSPARENT SURFACE LAYER OR FACING, AND AN INTERNAL FOAMED STRUCTURE COMPRISING A MYRIAD OF VERY SMALL BUBBLES OF SUCH SIZE, NUMBER AND INTENSITY AS TO GIVE A WHITE OPAQUE PIGMENT VISUAL EFFECT.
Claim 2
Dependent Claim
42 words
A SOLID MASS OF HALO-ACRYLATE RESIN COMPRISING AT LEAST ONE TRANSPARENT SURFACE LAYER OR FACING, AND AN INTERNAL FOAMED STRUCTURE COMPRISING A MYRIAD OF VERY SMALL BUBBLES OF SUCH SIZE, NUMBER AND INTENSITY AS TO GIVE A WHITE OPAQUE PIGMENT VISUAL EFFECT.
References Cited (Backward Citations)
US2684341A
Cited
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 |