US3084172A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Higher alkyl onium salts of graphitic oxide
Assignee: NL Industries Inc
•
Filing: 1954-06-21
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Granted: 1963-04-02
•
Expires: 1974-06-21
Abstract
No abstract record available.
Inventors
- 👤 Delmar H Larsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:30
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/90; C07C; C07C31/00; C07C31/02; C07C31/125; C07C33/00; C07C33/18; C07C33/20; C07C35/00; C07C35/22; C07C35/37; C07C35/42; C07D; C07D309/00; C07D309/34; C07D309/36; C07D309/38; C07F9/02; C07F9/28; C07F9/54; C07F9/66; C07F9/70
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
2 words
DODECYLAMMONIUM GRAPHITE.
References Cited (Backward Citations)
US1137373A
Cited
US2130947A
Cited
US2386804A
Cited
US2570990A
Cited
US2574510A
Cited
US2622987A
Cited
US2798878A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-04-01 | 1966-10-01 | 1967-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-01 | 1970-10-01 | 1971-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-01 | 1974-10-01 | 1975-04-02 | $7700.00 | Window Closed / Lapsed |