US2537165A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shaping unicrystalline bodies of material such as corundum and spinel
Assignee: Linde Air Products Co
•
Filing: 1944-12-13
•
Granted: 1951-01-09
•
Expires: 1964-12-13
Abstract
No abstract record available.
Inventors
- 👤 George H Smith
- 👤 Donald M Yenni
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:56
CPC Classifications
B; B28; B28D; B28D1/00; B28D1/22; B28D1/221; C; C30; C30B; C30B29/00; C30B29/10; C30B29/16; C30B29/22; C30B29/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
A PROCESS FOR FORMING A JEWEL BEARING OR LIKE ARTICLE HAVING A CAVITY THEREIN FROM A UNICRYSTALLINE ROD OF MATERIAL SUCH AS CORUNDUM AND SPINEL, SUCH PROCESS COMPRISING FORMING SAID CAVITY SOLELY BY MELTING AND ERODING MATERIAL FROM SAID ROD BY APPLYING AGAINST ONE END OF SUCH ROD AXIALLY THEREBY A JET OF HOT GAS HAVING SUFFICIENT HEATING INTENSITY TO MELT A PORTION OF SUCH ROD AND SUFFICIENT MASS VELOCITY TO DISPLACE THE MELTED MATERIAL, LEAVING A CAVITY; AND SEVERING SUCH ROD AT A POINT SPACED FROM SAID END.
Claim 2
Dependent Claim
89 words
A PROCESS FOR FORMING A JEWEL BEARING OR LIKE ARTICLE HAVING A CAVITY THEREIN FROM A UNICRYSTALLINE ROD OF MATERIAL SUCH AS CORUNDUM AND SPINEL, SUCH PROCESS COMPRISING FORMING SAID CAVITY SOLELY BY MELTING AND ERODING MATERIAL FROM SAID ROD BY APPLYING AGAINST ONE END OF SUCH ROD AXIALLY THEREBY A JET OF HOT GAS HAVING SUFFICIENT HEATING INTENSITY TO MELT A PORTION OF SUCH ROD AND SUFFICIENT MASS VELOCITY TO DISPLACE THE MELTED MATERIAL, LEAVING A CAVITY; AND SEVERING SUCH ROD AT A POINT SPACED FROM SAID END.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-08 | 1954-07-10 | 1955-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-08 | 1958-07-10 | 1959-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-08 | 1962-07-10 | 1963-01-09 | $7700.00 | Window Closed / Lapsed |