US3218200A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phosphate coating of metals
Assignee: MAN-GILL CHEMICAL COMPANY AN OH CORP
•
Filing: 1962-11-09
•
Granted: 1965-11-16
•
Expires: 1982-11-09
Abstract
No abstract record available.
Inventors
- 👤 John A Henricks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:03
CPC Classifications
C; C23; C23C; C23C22/00; C23C22/05; C23C22/06; C23C22/07; C23C22/08; C23C22/12; C23C22/13; C23C22/22; Y; Y10; Y10T; Y10T428/00; Y10T428/25; Y10T428/256
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
A METAL ARTICLE PROVIDED WITH A SMOOTH MIXED MICRO-CRYSTALLINE COATING OF A PHOSPHATE TYPE REVEALING NO CRYSTALLINE STRUCTURE AT A MAGNIFICATION OF 100 DIAMETERS, SAID PHOSPHATE COATING BEING INTEGRALLY UNITED WITH THE ARTICLE AND CONTAINING IN CHEMICAL, COMBINATION, ZINC, PHOSPHATE AND A SUBSTANTIAL PROPORTION, SUFFICIENT TO IMPART SAID MICRO-CRYSTALLINE CHARACTER TO THE COATING, OF A METAL SELECTED FROM THE GROUP CONSISTING OF LITHIUM, BERYLLIUM, MAGNESIUM, CALCIUM, STRONTIUM, CADMIUM AND BARIUM.
Claim 2
Dependent Claim
70 words
A METAL ARTICLE PROVIDED WITH A SMOOTH MIXED MICRO-CRYSTALLINE COATING OF A PHOSPHATE TYPE REVEALING NO CRYSTALLINE STRUCTURE AT A MAGNIFICATION OF 100 DIAMETERS, SAID PHOSPHATE COATING BEING INTEGRALLY UNITED WITH THE ARTICLE AND CONTAINING IN CHEMICAL, COMBINATION, ZINC, PHOSPHATE AND A SUBSTANTIAL PROPORTION, SUFFICIENT TO IMPART SAID MICRO-CRYSTALLINE CHARACTER TO THE COATING, OF A METAL SELECTED FROM THE GROUP CONSISTING OF LITHIUM, BERYLLIUM, MAGNESIUM, CALCIUM, STRONTIUM, CADMIUM AND BARIUM.
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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) | 1968-11-15 | 1969-05-17 | 1969-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-15 | 1973-05-17 | 1973-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-15 | 1977-05-17 | 1977-11-16 | $7700.00 | Window Closed / Lapsed |