US3055739A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized nitric acid
Assignee: Phillips Petroleum Co
•
Filing: 1959-09-08
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Granted: 1962-09-25
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Expires: 1979-09-08
Abstract
No abstract record available.
Inventors
- 👤 Richard C Doss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:53
CPC Classifications
C; C06; C06B; C06B47/00; C06B47/02; C06B47/04; C01; C01B; C01B21/00; C01B21/20; C01B21/38; C01B21/46
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
35 words
A STABILIZED NITRIC ACID CONSISTING ESSENTIALLY OF NITRIC ACID AND FROM ABOUT 0.001 TO ABOUT 10 WEIGHT PERCENT OF AT LEAST ONE ORGANIC SULFONIUM COMPOUND CHARACTERIZED BY A FORMULA SELECTED FROM THE GROUP CONSISTING OF
Claim 2
Dependent Claim
35 words
A STABILIZED NITRIC ACID CONSISTING ESSENTIALLY OF NITRIC ACID AND FROM ABOUT 0.001 TO ABOUT 10 WEIGHT PERCENT OF AT LEAST ONE ORGANIC SULFONIUM COMPOUND CHARACTERIZED BY A FORMULA SELECTED FROM THE GROUP CONSISTING OF
References Cited (Backward Citations)
US2763619A
Cited
US2760845A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-09-24 | 1966-03-26 | 1966-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-24 | 1970-03-26 | 1970-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-24 | 1974-03-26 | 1974-09-25 | $7700.00 | Window Closed / Lapsed |