Patent US2689163A successfully refreshed from Google Patents.
US2689163A
Expired / Lapsed
US
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Tanning agent and method of making and using same
Assignee: Individual
•
Filing: 1951-04-17
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Granted: 1954-09-14
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Expires: 1971-04-17
Abstract
No abstract record available.
Inventors
- 👤 Paquet Maxime
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:26
CPC Classifications
C; C14; C14C; C14C3/00; C14C3/02; C14C3/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
A TANNING BATH ESSENTIALLY CONSISTING OF AN AQUEOUS SUSPENSION OF DISCRETE SILICA GEL PARTICLES BEING SUBSTANTIALLY WATER INSOLUBLE AND HAVING A GREATER THAN COLLOIDAL SIZE, SAID SILICA GEL PARTICLES HAVING DISTRIBUTED THERETHROUGH AND EMBEDDED THEREIN A WATER SOLUBLE COMPLEX OF INORGANIC SODIUM ZIRCONIUM SALTS IN THE PROPORTION OF 0.1-2 MOLES SIO2 PER EACH MOLE OF ZRO2, SAID BATH CONTAINING 10-70 GMS. ZIRCONIUM SALT CALCULATED AS ZRO2 PER LITER.
Claim 2
Dependent Claim
68 words
A TANNING BATH ESSENTIALLY CONSISTING OF AN AQUEOUS SUSPENSION OF DISCRETE SILICA GEL PARTICLES BEING SUBSTANTIALLY WATER INSOLUBLE AND HAVING A GREATER THAN COLLOIDAL SIZE, SAID SILICA GEL PARTICLES HAVING DISTRIBUTED THERETHROUGH AND EMBEDDED THEREIN A WATER SOLUBLE COMPLEX OF INORGANIC SODIUM ZIRCONIUM SALTS IN THE PROPORTION OF 0.1-2 MOLES SIO2 PER EACH MOLE OF ZRO2, SAID BATH CONTAINING 10-70 GMS. ZIRCONIUM SALT CALCULATED AS ZRO2 PER LITER.
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) | 1957-09-13 | 1958-03-15 | 1958-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-13 | 1962-03-15 | 1962-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-13 | 1966-03-15 | 1966-09-14 | $7700.00 | Window Closed / Lapsed |