US3109757A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and material for applying phosphate conversion coatings on zinciferous surfaces
Assignee: Henkel Corp
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Filing: 1962-01-26
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Granted: 1963-11-05
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Expires: 1982-01-26
Abstract
No abstract record available.
Inventors
- 👤 Earl R Reinhold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:30
CPC Classifications
C; C23; C23C; C23C22/00; C23C22/05; C23C22/06; C23C22/34; C23C22/36; C23C22/362
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
IN THE ART OF PHOSPHATGE COATING ZINCIFEROUS SURFACES,M THE METHOD WHICH COMPRISES SUBJECTING SAID SURFACE TO THE ACTION OF AN AQUEOUS ACID ZINC PHOSPHATE COATING SOLUTION, THE COATING PRODUCING INGREDIENTS OF WHICH CONSIST ESSENTIALLY OF PHOSPHATE ION FROM 0.5% TO 2.5% BY WEIGHT AND NITRATE ION FROM 0.2% TO 1.0% BYW EIGHT, WHICH SOLUTION ALSO CONTAINS AS ADDITION AGENTS: (A) AT LEAST 0.1% BY WEIGHT OF THE SOLUTION OF A COMPOUND SELECTED FROM THE GROUP WHICH CONSISTS OF GLYCEROPHOISPHORIC ACIDS AND WATER SOLUBLE SALTS THEREOF; AND (B) AT LEAST 0.025% BY WEIGHT OF THE SOLUTION OF COMPLEX FLUORIDE RADICAL SELECTED FROM THE GROUP CONSISTING OF FLUORBORIC, FLUOSILICIC, FLUOTITANIC AND FLUOZIRCONIC ACIDS AND ALKALI METAL AND AMMONIUM SALTS THEREOF; AND REPENLISHING THE SOLUTION AS REQUIRED TO MAINTAIN ITS INGREDIENTS AS DEFINED.
Claim 2
Dependent Claim
130 words
IN THE ART OF PHOSPHATGE COATING ZINCIFEROUS SURFACES,M THE METHOD WHICH COMPRISES SUBJECTING SAID SURFACE TO THE ACTION OF AN AQUEOUS ACID ZINC PHOSPHATE COATING SOLUTION, THE COATING PRODUCING INGREDIENTS OF WHICH CONSIST ESSENTIALLY OF PHOSPHATE ION FROM 0.5% TO 2.5% BY WEIGHT AND NITRATE ION FROM 0.2% TO 1.0% BYW EIGHT, WHICH SOLUTION ALSO CONTAINS AS ADDITION AGENTS: (A) AT LEAST 0.1% BY WEIGHT OF THE SOLUTION OF A COMPOUND SELECTED FROM THE GROUP WHICH CONSISTS OF GLYCEROPHOISPHORIC ACIDS AND WATER SOLUBLE SALTS THEREOF; AND (B) AT LEAST 0.025% BY WEIGHT OF THE SOLUTION OF COMPLEX FLUORIDE RADICAL SELECTED FROM THE GROUP CONSISTING OF FLUORBORIC, FLUOSILICIC, FLUOTITANIC AND FLUOZIRCONIC ACIDS AND ALKALI METAL AND AMMONIUM SALTS THEREOF; AND REPENLISHING THE SOLUTION AS REQUIRED TO MAINTAIN ITS INGREDIENTS AS DEFINED.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-11-04 | 1967-05-06 | 1967-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-11-04 | 1971-05-06 | 1971-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-11-04 | 1975-05-06 | 1975-11-05 | $7700.00 | Window Closed / Lapsed |