US2510219A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glossing corundum crystals
Assignee: Linde Air Products Co
•
Filing: 1947-09-13
•
Granted: 1950-06-06
•
Expires: 1967-09-13
Abstract
No abstract record available.
Inventors
- 👤 Gordon B Graham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 05:01
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/45; C04B41/50; C04B41/5022; C30; C30B; C30B29/00; C30B29/10; C30B29/16; C30B29/20; C30B33/00; Y; Y10; Y10T; Y10T428/00; Y10T428/8305
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
31 words
GLOSSING A CRYSTALLINE CORUNDUM ARTICLE BY TREATING ITS SURFACE WITH A FUSED MIXTURE CONSISTING ESSENTIALLY OF BETWEEN 1 AND 6 PARTS OF SODIUM CARBONATE TO 1 PART OF AN ALKALI BORATE.
Claim 2
Dependent Claim
31 words
GLOSSING A CRYSTALLINE CORUNDUM ARTICLE BY TREATING ITS SURFACE WITH A FUSED MIXTURE CONSISTING ESSENTIALLY OF BETWEEN 1 AND 6 PARTS OF SODIUM CARBONATE TO 1 PART OF AN ALKALI BORATE.
References Cited (Backward Citations)
US1806589A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-06-05 | 1953-12-05 | 1954-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-06-05 | 1957-12-05 | 1958-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-06-05 | 1961-12-05 | 1962-06-06 | $7700.00 | Window Closed / Lapsed |