US3843390A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coated polycarbonates
Assignee: Baychem Corp
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Filing: 1972-04-19
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Granted: 1974-10-22
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Expires: 1992-04-19
Abstract
Abstract 1. COATED POLYCARBONATE HAVING AS A SURFACE LAYER A COATING CONTAINING (1) FROM ABOUT 5 TO ABOUT 62 PERCENT BY WEIGHT OF THE COATING OF A LINEAR DIOL, (2) FROM ABOUT 8 TO ABOUT 35 PERCENT BY WEIGHT OF THE COATING OF A THERMOSETTING ACRYLIC CONTAINING ABOUT 10 PERCENT BY WEIGHT OF THE ACRYLIC OF AN UNSATURATED CARBOXYLIC ACID, FROM ABOUT 4 TO ABOUT 10 PERCENT BY WEIGHT OF THE ACRYLIC OF ANY HYDROXYALKYL ESTER OF AN ALPHA,BETA-UNSATURATED CARBOXYLIC ACID WITH THE REMAINDER COMPRISING AT LEAST ONE ALKYL ESTER OF AN ALPHA,BETA-ETHYLENICALLY UNSATURATED CARBOXYLIC ACID AND (3) FROM ABOUT 17 TO ABOUT 87 PERCENT BY WEIGHT OF THE COATING OF A CROSSLINKING AGENT.
Inventors
- 👤 G Hudson
- 👤 J Rich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:53
CPC Classifications
C; C09; C09D; C09D167/00; C09D167/04; C08; C08J; C08J7/00; C08J7/04; C08J7/0427; C08J7/043; C08J7/046; C08J2369/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31507; Y10T428/31786
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
COATED POLYCARBONATE HAVING AS A SURFACE LAYER A COATING CONTAINING (1) FROM ABOUT 5 TO ABOUT 62 PERCENT BY WEIGHT OF THE COATING OF A LINEAR DIOL, (2) FROM ABOUT 8 TO ABOUT 35 PERCENT BY WEIGHT OF THE COATING OF A THERMOSETTING ACRYLIC CONTAINING ABOUT 10 PERCENT BY WEIGHT OF THE ACRYLIC OF AN UNSATURATED CARBOXYLIC ACID, FROM ABOUT 4 TO ABOUT 10 PERCENT BY WEIGHT OF THE ACRYLIC OF ANY HYDROXYALKYL ESTER OF AN ALPHA,BETA-UNSATURATED CARBOXYLIC ACID WITH THE REMAINDER COMPRISING AT LEAST ONE ALKYL ESTER OF AN ALPHA,BETA-ETHYLENICALLY UNSATURATED CARBOXYLIC ACID AND (3) FROM ABOUT 17 TO ABOUT 87 PERCENT BY WEIGHT OF THE COATING OF A CROSSLINKING AGENT.
Claim 2
Dependent Claim
112 words
COATED POLYCARBONATE HAVING AS A SURFACE LAYER A COATING CONTAINING (1) FROM ABOUT 5 TO ABOUT 62 PERCENT BY WEIGHT OF THE COATING OF A LINEAR DIOL, (2) FROM ABOUT 8 TO ABOUT 35 PERCENT BY WEIGHT OF THE COATING OF A THERMOSETTING ACRYLIC CONTAINING ABOUT 10 PERCENT BY WEIGHT OF THE ACRYLIC OF AN UNSATURATED CARBOXYLIC ACID, FROM ABOUT 4 TO ABOUT 10 PERCENT BY WEIGHT OF THE ACRYLIC OF ANY HYDROXYALKYL ESTER OF AN ALPHA,BETA-UNSATURATED CARBOXYLIC ACID WITH THE REMAINDER COMPRISING AT LEAST ONE ALKYL ESTER OF AN ALPHA,BETA-ETHYLENICALLY UNSATURATED CARBOXYLIC ACID AND (3) FROM ABOUT 17 TO ABOUT 87 PERCENT BY WEIGHT OF THE COATING OF A CROSSLINKING AGENT.
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) | 1977-10-21 | 1978-04-22 | 1978-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-21 | 1982-04-22 | 1982-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-21 | 1986-04-22 | 1986-10-22 | $7700.00 | Window Closed / Lapsed |