US3754073A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for manufacture of zirconium tetrachloride in reactor of specific lining
Assignee: Individual
•
Filing: 1970-10-01
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Granted: 1973-08-21
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Expires: 1990-10-01
Abstract
Abstract USE OF A NOVEL LINING MATERIAL, WHICH IS A SHAKABLE OR TEMPABLE MIXTURE OF FINE-GRAINED CORUNDUM AND AS BINDER, THE PARTIAL WATER HYDROLYSIS PRODUCT OF SILICON AND ALUMINUM ALCOHOLATES DILUTED WITH A SUTIABLE SOLVENT.
Inventors
- 👤 F Langenhoff
- 👤 G Schinke
- 👤 E Termin
- 👤 A Lenz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:33
CPC Classifications
C; C04; C04B; C04B33/00; C04B33/02; C04B33/13; C04B33/1315; B; B01; B01J; B01J2/00; B01J2/28
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) | 1976-08-20 | 1977-02-19 | 1977-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-20 | 1981-02-19 | 1981-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-20 | 1985-02-19 | 1985-08-21 | $7700.00 | Window Closed / Lapsed |