US3097978A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of coating zinc surfaces
Assignee: Individual
•
Filing: 1961-08-17
•
Granted: 1963-07-16
•
Expires: 1981-08-17
Abstract
No abstract record available.
Inventors
- 👤 Isaac L Newell
- 👤 Ernest A Walen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:15
CPC Classifications
C; C23; C23C; C23C22/00; C23C22/82; C23C22/83
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
IN THE METHOD OF CHROMATE CONVERSION COATING ZINC AND ZINC ALLOYS, THE IMPROVEMENT WHICH COMPRISES TREATING THE CHROMATE CONTAINING COATING FOLLOWING FORMATION THEREOF WITH A SEPARATE AQUEOUS SOLUTION HAVING A CONCENTRATION OF BETWEEN ABOUT 0.0025 AND 0.5 GRAM MOLE PER LITER OF A MEMBER SELECTED FROM THE GROUP CONSISTING MOLYBDATE IONS, TUNGSTATE IONS, VANADATE IONS, PHOSPHATE IONS AND MIXTURES OF THE FOREGOING.
Claim 2
Dependent Claim
62 words
IN THE METHOD OF CHROMATE CONVERSION COATING ZINC AND ZINC ALLOYS, THE IMPROVEMENT WHICH COMPRISES TREATING THE CHROMATE CONTAINING COATING FOLLOWING FORMATION THEREOF WITH A SEPARATE AQUEOUS SOLUTION HAVING A CONCENTRATION OF BETWEEN ABOUT 0.0025 AND 0.5 GRAM MOLE PER LITER OF A MEMBER SELECTED FROM THE GROUP CONSISTING MOLYBDATE IONS, TUNGSTATE IONS, VANADATE IONS, PHOSPHATE IONS AND MIXTURES OF THE FOREGOING.
References Cited (Backward Citations)
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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) | 1966-07-15 | 1967-01-14 | 1967-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-15 | 1971-01-14 | 1971-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-15 | 1975-01-14 | 1975-07-16 | $7700.00 | Window Closed / Lapsed |