US2597406A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing of phosphate containing coating products for the protection of metals against corrosion
Assignee: Individual
•
Filing: 1949-03-08
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Granted: 1952-05-20
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Expires: 1969-03-08
Abstract
No abstract record available.
Inventors
- 👤 Thome-Johannesen Ole
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:41
CPC Classifications
C; C23; C23C; C23C22/00; C23C22/05; C23C22/06; C23C22/07; C23C22/08; C01; C01B; C01B25/00; C01B25/16; C01B25/26; C01B25/45
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
113 words
A METHOD OF PRODUCTION OF POWDERY PHOSPHATE-CONTAINING COATING PRODUCTS, SAID PRODUCTS BEING CAPABLE OF STORAGE, FOR THE PROTECTION OF METALS AGAINST CORROSION, COMPRISING, MIXING CALCIUM MONO-PHOSPHATE, CAH4(PO4)2, WITH A MATERIAL SELECTED FROM THE CLASS CONSISTING OF TRI-ZINC-PHOSPHATE, A MIXTURE OF TRI-ZINC-PHOSPHATE AND ZINC-OXIDE AND A MIXTURE OF ZINC-OXIDE AND ZINC CARBONATE IN SUCH PROPORTIONS THAT THE CONTENT OF ACID IN THE MIXTURE LIES SOMEWHERE BETWEEN MONO-PHOSPHATE AND DI-PHOSPHATE, ADDING A SUFFICIENT QUANTITY OF WATER TO MAKE THE REACTION BETWEEN THESE SUBSTANCES TAKE PLACE QUICKLY, ALLOWING SAID SUBSTANCES TO REACT WITH ONE ANOTHER, COMPLETELY DRYING THE MOIST, COMPLETELY REACTED MIXTURE AT ELEVATED TEMPERATURE OF BETWEEN 110* AND 130* C. AND PULVERIZING THE DRIED MIXTURE.
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) | 1955-05-20 | 1955-11-19 | 1956-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-05-20 | 1959-11-19 | 1960-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-05-20 | 1963-11-19 | 1964-05-20 | $7700.00 | Window Closed / Lapsed |