US2766154A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of coating metals with amine phosphate coating and composition therefor
Assignee: Parker Rust Proof Co
•
Filing: 1952-03-26
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Granted: 1956-10-09
•
Expires: 1972-03-26
Abstract
No abstract record available.
Inventors
- 👤 William S Russell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:28
CPC Classifications
C; C23; C23C; C23C22/00; C23C22/05; C23C22/06; C23C22/07; C23C22/08; C23C22/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
35 words
A COMPOSITION FOR COATING A METAL OF THE CLASS CONSISTING OF MILD STEEL, ZINC AND ALUMINUM COMPRISING AN AQUEOUS SOLUTION CONSISTING ESSENTIALLY OF PHOSPHORIC ACID, WATER, AND A SUBSTITUTED HETEROCYCLIC AMINE PHOSPHATE HAVING THE STRUCTURE:
Claim 2
Dependent Claim
35 words
A COMPOSITION FOR COATING A METAL OF THE CLASS CONSISTING OF MILD STEEL, ZINC AND ALUMINUM COMPRISING AN AQUEOUS SOLUTION CONSISTING ESSENTIALLY OF PHOSPHORIC ACID, WATER, AND A SUBSTITUTED HETEROCYCLIC AMINE PHOSPHATE HAVING THE STRUCTURE:
References Cited (Backward Citations)
US1805982A
Cited
US2318606A
Cited
US2416734A
Cited
US2456947A
Cited
US2479423A
Cited
US2609308A
Cited
US2552874A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-09 | 1960-04-09 | 1960-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-09 | 1964-04-09 | 1964-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-09 | 1968-04-09 | 1968-10-09 | $7700.00 | Window Closed / Lapsed |