US3246995A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal marking composition
Assignee: Aerojet Rocketdyne Inc
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Filing: 1962-02-19
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Granted: 1966-04-19
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Expires: 1982-02-19
Abstract
No abstract record available.
Inventors
- 👤 Harry J Moore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:15
CPC Classifications
C; C23; C23C; C23C18/00; C23C18/16; C23C18/31; C23C18/38; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9265; Y10S428/927; Y10T; Y10T428/00; Y10T428/12; Y10T428/12389; Y10T428/12396; Y10T428/12493; Y10T428/12771; Y10T428/12861; Y10T428/12903; Y10T428/12917
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
A METHOD FOR COATING FERROUS METAL SURFACES COMPRISING CLEANING SAID FERROUS METAL SURFACE AND APPLYING THERETO A MAKING COMPOSITION COMPRISING AN EFFECTIVE AMOUNT UP TO ABOUT 20 PERCENT BY WEIGHT OF COPPER SULFATE, AN ACID IN SUFFICIENT QUANTITY TO GIVE A PH WHICH IS LESS THAN ABOUT 3.5, AN EFFECTIVE AMOUNT OF FROM ABOUT 0.1% BASED ON THE WEIGHT OF POLAR SOLVENT UP TO ABOUT 6 PERCENT BY WEIGHT OF THE TOTAL COMPOSITION OF A COLLOIDAL MATERIAL SUFFICIENT TO SUPPRESS GASSING ON CONTACT OF THE MARKING COMPOSITIONS WITH A FERROUS METAL, AND A POLAR SOLVENT.
Claim 2
Independent Claim
95 words
A METHOD FOR COATING FERROUS METAL SURFACES COMPRISING CLEANING SAID FERROUS METAL SURFACE AND APPLYING THERETO A MAKING COMPOSITION COMPRISING AN EFFECTIVE AMOUNT UP TO ABOUT 20 PERCENT BY WEIGHT OF COPPER SULFATE, AN ACID IN SUFFICIENT QUANTITY TO GIVE A PH WHICH IS LESS THAN ABOUT 3.5, AN EFFECTIVE AMOUNT OF FROM ABOUT 0.1% BASED ON THE WEIGHT OF POLAR SOLVENT UP TO ABOUT 6 PERCENT BY WEIGHT OF THE TOTAL COMPOSITION OF A COLLOIDAL MATERIAL SUFFICIENT TO SUPPRESS GASSING ON CONTACT OF THE MARKING COMPOSITIONS WITH A FERROUS METAL, AND A POLAR SOLVENT.
References Cited (Backward Citations)
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Cited
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-18 | 1969-10-18 | 1970-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-18 | 1973-10-18 | 1974-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-18 | 1977-10-18 | 1978-04-19 | $7700.00 | Window Closed / Lapsed |