Patent US2890971A successfully refreshed from Google Patents.
US2890971A
Expired / Lapsed
US
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Coating method
Assignee: RCA Corp
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Filing: 1956-05-02
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Granted: 1959-06-16
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Expires: 1976-05-02
Abstract
No abstract record available.
Inventors
- 👤 Walter L Arnold
- 👤 Robert K Pearce
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:11
CPC Classifications
H; H01; H01J; H01J9/00; H01J9/02; H01J9/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
A COATING METHOD COMPRISING THE STEPS OF SUCCESSIVELY COATING AN OXIDIZABLE METALLIC BASE WITH A MIXTURE INCLUDING ALUMINUM OXIDE AND AN ALUMINUM NITRATE BINDER TO FORM A COATING ON SAID BASE, DRYING IN AIR THE COATING THUS FORMED AT A TEMPERATURE HIGH ENOUGH TO DRY THE COATING BUT INSUFFICIENT TO OXIDIZE THE COATED BASE TO A DEGREE WHEREIN THE OXIDE RESISTS CHEMICAL REMOVAL, WHEREBY THE COATING IS RELATIVELY SOFT, THEN IMMERSING THE COATED BASE IN A BATH CONSISTING ESSENTIALLY OF ALUMINUM
Claim 2
Dependent Claim
81 words
A COATING METHOD COMPRISING THE STEPS OF SUCCESSIVELY COATING AN OXIDIZABLE METALLIC BASE WITH A MIXTURE INCLUDING ALUMINUM OXIDE AND AN ALUMINUM NITRATE BINDER TO FORM A COATING ON SAID BASE, DRYING IN AIR THE COATING THUS FORMED AT A TEMPERATURE HIGH ENOUGH TO DRY THE COATING BUT INSUFFICIENT TO OXIDIZE THE COATED BASE TO A DEGREE WHEREIN THE OXIDE RESISTS CHEMICAL REMOVAL, WHEREBY THE COATING IS RELATIVELY SOFT, THEN IMMERSING THE COATED BASE IN A BATH CONSISTING ESSENTIALLY OF ALUMINUM
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) | 1962-06-15 | 1962-12-15 | 1963-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-15 | 1966-12-15 | 1967-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-15 | 1970-12-15 | 1971-06-16 | $7700.00 | Window Closed / Lapsed |