US3079352A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protective coating compositions for etching formed from chloroprene polymer, carbon black and phenolaldehyde resin, and metal substrate coated therewith
Assignee: Purex Corp Ltd
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Filing: 1956-04-23
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Granted: 1963-02-26
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Expires: 1976-04-23
Abstract
No abstract record available.
Inventors
- 👤 Jr Don C Atkins
- 👤 Richard V Edds
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:21
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/008; C09D111/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31688; Y10T428/31692; Y10T428/31696
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
102 words
A HEAT CURABLE MASKANT COMPOSITION ADAPTED TO FORM A PLASTIC COATING INERT TO ACIDS AND ALKALI, SAID COMPOSITION CONSISTING ESSENTIALLY OF THE FOLLOWING INGREDIENTS BY WEIGHT: ABOUT 5 TO ABOUT 25% OF NON-COPOLYMERIZED CHLOROPRENE POLYMER, ABOUT 3 TO ABOUT 25% CARBON BLACK, ABOUT 1 TO ABOUT 5% OF PHENOL-FORMALDEHYDE RESIN, FROM ABOUT 1 TO ABOUT 10% CHLORINATED NATURAL RUBBER, ABOUT .08 TO ABOUT 0.6% ALPHA NAPHTHYL AMINE AS ANTIOXIDANT, ABOUT 0.1% TO ABOUT 3% OF AN ACCELERATOR COMPOSITION CONSISTING ESSENTIALLY OF A MIXTURE OF A BUTYRALDEHYDE-MONOBUTYLAMINE CONDENSATION PRODUCT, LITHARGE AND MAGNESIUM OXIDE, THE REMAINDER OF SAID COMPOSITION BEING AN ORGANIC AROMATIC SOLVENT.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-02-25 | 1966-08-27 | 1967-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-25 | 1970-08-27 | 1971-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-25 | 1974-08-27 | 1975-02-26 | $7700.00 | Window Closed / Lapsed |