Patent US2952599A successfully refreshed from Google Patents.
US2952599A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of metallic nitrides
Assignee: Compagnie de Saint Gobain SA
•
Filing: 1958-07-15
•
Granted: 1960-09-13
•
Expires: 1978-07-15
Abstract
No abstract record available.
Inventors
- 👤 Suchet Jacques
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:50
CPC Classifications
C; C01; C01B; C01B21/00; C01B21/06; C01B21/076; C01B21/0763; B; B01; B01J; B01J19/00; B01J19/08; B01J19/087; C01B21/064; C01B21/0643; C01B21/068; C01B32/00; C01B32/90; C01P; C01P2006/00; C01P2006/60
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
58 words
A METHOD OF MAKING NITRIDES OF METALLIC ELEMENTS OF THE 4TH, 5TH, AND 6TH GROUPS OF THE PERIODIC CLASSIFICATION OF THE ELEMENTS THAT COMPRISES GENERATING A HIGHFREQUENCY ELECTRICAL DISCHARGE HAVING A FREQUENCY MINIMUM OF ABOUT ONE MEGACYCLE IN A GASEOUS HALOGENATED METALLIC COMPOUND OF A METALLIC ELEMENT BELONGING TO A SAID GROUP, CONTAINING NITROGEN, AND A GASEOUS REDUCING
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-09-13 | 1964-03-14 | 1964-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-13 | 1968-03-14 | 1968-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-13 | 1972-03-14 | 1972-09-13 | $7700.00 | Window Closed / Lapsed |