US2798009A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coating composition for metals
Assignee: Hercules Powder Co
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Filing: 1954-06-07
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Granted: 1957-07-02
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Expires: 1974-06-07
Abstract
No abstract record available.
Inventors
- 👤 Clarence W Gault
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:02
CPC Classifications
C; C23; C23C; C23C22/00; C23C22/02; C23C22/04; C09; C09D; C09D101/00; C09D101/08; C09D101/26; C09D101/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A COATING COMPOSITION, CHARACTERIZED BY IMPROVED ADHESION TO METALS AND THE ABILITY TO INHIBIT THE CORROSION OF METALS, CONSISTING ESSENTIALLY OF THE REACTION PRODUCT OF A SOLUTION OF 0.5-5 PARTS BY WEIGHT OF CHROMIUM TRIOXIDE, 1-20 PARTS BY WEIGHT OF PHOSPHORIC ACID AND 1-200 PARTS BY WEIGHT OF ORGANO-SOLUBLE ETHYL CELLULOSE, THE AMOUNT OF CHROMIUM TRIOXIDE BEING LESS THAN THE AMOUNT OF PHOSPHORIC ACID, SAID REACTION PRODUCT BEING DISSOLVED IN ORGANIC SOLVENT, THE CONCENTRATION OF SAID REACTION PRODUCT BEING FROM 3% TO 15% BY WEIGHT BASED ON THE TOTAL WEIGHT OF COATING COMPOSITION.
Claim 2
Dependent Claim
93 words
A COATING COMPOSITION, CHARACTERIZED BY IMPROVED ADHESION TO METALS AND THE ABILITY TO INHIBIT THE CORROSION OF METALS, CONSISTING ESSENTIALLY OF THE REACTION PRODUCT OF A SOLUTION OF 0.5-5 PARTS BY WEIGHT OF CHROMIUM TRIOXIDE, 1-20 PARTS BY WEIGHT OF PHOSPHORIC ACID AND 1-200 PARTS BY WEIGHT OF ORGANO-SOLUBLE ETHYL CELLULOSE, THE AMOUNT OF CHROMIUM TRIOXIDE BEING LESS THAN THE AMOUNT OF PHOSPHORIC ACID, SAID REACTION PRODUCT BEING DISSOLVED IN ORGANIC SOLVENT, THE CONCENTRATION OF SAID REACTION PRODUCT BEING FROM 3% TO 15% BY WEIGHT BASED ON THE TOTAL WEIGHT OF COATING COMPOSITION.
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) | 1960-07-01 | 1960-12-31 | 1961-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-01 | 1964-12-31 | 1965-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-01 | 1968-12-31 | 1969-07-02 | $7700.00 | Window Closed / Lapsed |