Patent US2943928A successfully refreshed from Google Patents.
US2943928A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for improving the storage stability of ammonium salts
Assignee: Phillips Petroleum Co
•
Filing: 1955-05-13
•
Granted: 1960-07-05
•
Expires: 1975-05-13
Abstract
No abstract record available.
Inventors
- 👤 Eugene D Guth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:16
CPC Classifications
C; C05; C05C; C05C1/00; C05C1/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
26 words
A METHOD FOR IMPROVING THE STROAGE STABILITY OF AN AMMONIUM SALT, WHICH COMPRISES INCORPORATING IN SAID SALT A SMALL BUT STABILIZING AMOUNT OF A METAL NITRIDE.
Claim 2
Independent Claim
26 words
A METHOD FOR IMPROVING THE STROAGE STABILITY OF AN AMMONIUM SALT, WHICH COMPRISES INCORPORATING IN SAID SALT A SMALL BUT STABILIZING AMOUNT OF A METAL NITRIDE.
References Cited (Backward Citations)
US1042723A
Cited
US1916841A
Cited
US2417115A
Cited
US2434872A
Cited
US2399987A
Cited
US2455205A
Cited
US2616786A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-05 | 1964-01-04 | 1964-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-05 | 1968-01-04 | 1968-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-05 | 1972-01-04 | 1972-07-05 | $7700.00 | Window Closed / Lapsed |