US2424262A
Expired / Lapsed
US
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Coordinated zirconyl and hafnyl compounds and their production
Assignee: Tam Ceramics LLC
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Filing: 1943-06-23
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Granted: 1947-07-22
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Expires: 1963-06-23
Abstract
No abstract record available.
Inventors
- 👤 Wainer Eugene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:54
CPC Classifications
C; C01; C01G; C01G25/00; C01G25/003; C01G27/00; C01G27/003; C07; C07F; C07F7/00; C07F7/003; C22; C22B; C22B3/00; C22B3/20; C22B3/26; C22B3/32; D; D06; D06M; D06M11/00; D06M11/68; D06M11/70; D06M11/71; Y; Y02; Y02P; Y02P10/00; Y02P10/20
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) | 1950-07-21 | 1951-01-20 | 1951-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-07-21 | 1955-01-20 | 1955-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-07-21 | 1959-01-20 | 1959-07-22 | $7700.00 | Window Closed / Lapsed |