Patent US3390064A successfully refreshed from Google Patents.
US3390064A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrolytic process for preparing stannous fluoride
Assignee: Honeywell International Inc
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Filing: 1964-10-06
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Granted: 1968-06-25
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Expires: 1984-10-06
Abstract
No abstract record available.
Inventors
- 👤 Baltakmens Gotlibs
- 👤 John P Tourish
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:06
CPC Classifications
C; C01; C01G; C01G19/00; C01G19/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
39 words
A METHOD FOR PRODUCING STANNOUS FLUORIDE FREE FROM SUBSTANTIAL CONTAMINATION WITH STANNIC FLUORIDE, WHICH COMPRISES PASSING AN ELECTRIC CURRENT BETWEEN A MERCURY CATHODE AND AN ANODE OF METALLIC TIN HAVING SUPERIMPOSED THEREON A THIN LAYER OF MERCURY-TIN AMALGAM, SAID
Claim 2
Independent Claim
39 words
A METHOD FOR PRODUCING STANNOUS FLUORIDE FREE FROM SUBSTANTIAL CONTAMINATION WITH STANNIC FLUORIDE, WHICH COMPRISES PASSING AN ELECTRIC CURRENT BETWEEN A MERCURY CATHODE AND AN ANODE OF METALLIC TIN HAVING SUPERIMPOSED THEREON A THIN LAYER OF MERCURY-TIN AMALGAM, SAID
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) | 1971-06-25 | 1971-12-25 | 1972-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-25 | 1975-12-25 | 1976-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-25 | 1979-12-25 | 1980-06-25 | $7700.00 | Window Closed / Lapsed |