US2715071A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Colored rutile boules and a method for making the same
Assignee: NL Industries Inc
•
Filing: 1954-06-17
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Granted: 1955-08-09
•
Expires: 1974-06-17
Abstract
No abstract record available.
Inventors
- 👤 Merker Leon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:31
CPC Classifications
C; C30; C30B; C30B29/00; C30B29/10; C30B29/16; C30B29/22; C30B29/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
44 words
A COLORED RUTILE SINGLE CRYSTAL BOULE CONTAINING AN OXIDE OF AN ELEMENT SELECTED FROM THE GROUP CONSISTING OF COBALT AND NICKEL; AND COBALT IN AMOUNT FROM 0.0005% TO 0.13%, THE NICKEL PRESENT IN AMOUNT FROM 0.005% TO 1.0% BY WEIGHT CALCULATED AS THE ELEMENT.
Claim 2
Dependent Claim
44 words
A COLORED RUTILE SINGLE CRYSTAL BOULE CONTAINING AN OXIDE OF AN ELEMENT SELECTED FROM THE GROUP CONSISTING OF COBALT AND NICKEL; AND COBALT IN AMOUNT FROM 0.0005% TO 0.13%, THE NICKEL PRESENT IN AMOUNT FROM 0.005% TO 1.0% BY WEIGHT CALCULATED AS THE ELEMENT.
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) | 1958-08-08 | 1959-02-07 | 1959-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-08-08 | 1963-02-07 | 1963-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-08-08 | 1967-02-07 | 1967-08-09 | $7700.00 | Window Closed / Lapsed |