US2610129A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthetic rutile and method of making
Assignee: Union Carbide Corp
•
Filing: 1949-03-22
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Granted: 1952-09-09
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Expires: 1969-03-22
Abstract
No abstract record available.
Inventors
- 👤 William G Eversole
- 👤 Drost Wilfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:27
CPC Classifications
C; C30; C30B; C30B29/00; C30B29/10; C30B29/16; C30B29/22; C30B29/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
33 words
A SINGLE CRYSTAL OF SYNTHETIC RUTILE CONSISTING OF TITANIA AND AN EFFECTIVE AMOUNT UP TO ABOUT 1% OF AT LEAST ONE SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF TANTALUM OXIDE AND COLUMBIUM OXIDE.
Claim 2
Dependent Claim
33 words
A SINGLE CRYSTAL OF SYNTHETIC RUTILE CONSISTING OF TITANIA AND AN EFFECTIVE AMOUNT UP TO ABOUT 1% OF AT LEAST ONE SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF TANTALUM OXIDE AND COLUMBIUM OXIDE.
References Cited (Backward Citations)
US988230A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-09 | 1956-03-10 | 1956-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-09 | 1960-03-10 | 1960-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-09 | 1964-03-10 | 1964-09-09 | $7700.00 | Window Closed / Lapsed |