US3813302A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grain-refining compounds
Assignee: Individual
•
Filing: 1971-11-02
•
Granted: 1974-05-28
•
Expires: 1991-11-02
Abstract
Abstract NOVEL IMPROVED COMPOSITIONS OF TITANIUM FOR USE AS GRAIN-REFINING MATERIALS IN ZINC PHOSPHATING PROCESSES CONSIST ESSENTIALLY OFMIXED ORTHOPHOSPHATE OF TITANIUM AND BARIUM, STRONTIUM OR CALCIUM, WHICH ADDITIONALLY FORM NON-FLOCCULATED DISPERSIONS IN WATER. THE COMPOSITIONS MAY BE PREPAREDBY A PROCESS IN WHICH TITANIUM ORTHOPHOSPHATE IS PRECIPITATED IN A DISPERSION OF THE DIIVALENT METAL ORTHOPHOSPHATE IN WATER UNDER SPECIFIC LIMITING PROCESSING CONDITIONS. ALKALINE METAL-CLEANING LIQUIDS CONTAINING THE NOVEL TITANIUM COMPOSITIONS ARE ALSO DISCLOSED.
Inventors
- 👤 A Morrison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:14
CPC Classifications
C; C23; C23C; C23C22/00; C23C22/78; C23C22/80
Claims Analysis
Total Claims: 0
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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) | 1977-05-27 | 1977-11-26 | 1978-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-27 | 1981-11-26 | 1982-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-27 | 1985-11-26 | 1986-05-28 | $7700.00 | Window Closed / Lapsed |