US3160495A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wet process phosphoric acid and liquid fertilizer compositions containing the same
Assignee: Minerals and Chemicals Philipp Corp
•
Filing: 1961-03-28
•
Granted: 1964-12-08
•
Expires: 1981-03-28
Abstract
No abstract record available.
Inventors
- 👤 Homer A Smith
- 👤 Jr Edgar W Sawyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 03:26
CPC Classifications
C; C01; C01B; C01B25/00; C01B25/16; C01B25/18; C01B25/234; C01B25/235; C05; C05G; C05G5/00; C05G5/20; C05G5/27
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
A PLANT FOOD CONCENTRATE IN THE FORM OF A FLOWABLE THICKENED LIQUID AND CONSISTING ESSENTIALLY OF A CONCENTRATED AQUEOUS SOLUTION OF WET PROCESS PHOSPHORIC ACID CONTAINING INSOLUBLE IMPURITIES NORMALLY ASSOCIATED WITH WET PROCESS PHOSPHORIC ACID, AND COLLODIAL ATTAPULGITE CLAY DISPERSED IN SAID SOLUTION IN AMOUNT THAT IS SUFFICIENT TO MAINTAIN ANY INSOLUBLE IMPURITIES IN SAID SOLUTION IN STABLE HOMOGENEOUS SUSPENSION THEREIN AND IS INSUFFICIENT TO CAUSE SAID SOLUTION TO BECOME UNPOURABLE.
Claim 2
Dependent Claim
71 words
A PLANT FOOD CONCENTRATE IN THE FORM OF A FLOWABLE THICKENED LIQUID AND CONSISTING ESSENTIALLY OF A CONCENTRATED AQUEOUS SOLUTION OF WET PROCESS PHOSPHORIC ACID CONTAINING INSOLUBLE IMPURITIES NORMALLY ASSOCIATED WITH WET PROCESS PHOSPHORIC ACID, AND COLLODIAL ATTAPULGITE CLAY DISPERSED IN SAID SOLUTION IN AMOUNT THAT IS SUFFICIENT TO MAINTAIN ANY INSOLUBLE IMPURITIES IN SAID SOLUTION IN STABLE HOMOGENEOUS SUSPENSION THEREIN AND IS INSUFFICIENT TO CAUSE SAID SOLUTION TO BECOME UNPOURABLE.
References Cited (Backward Citations)
US2324079A
Cited
US2233867A
Cited
US2594257A
Cited
US2683658A
Cited
US2790776A
Cited
US2773757A
Cited
US2971292A
Cited
US2784110A
Cited
US2800449A
Cited
US2792286A
Cited
US2831818A
Cited
US2815323A
Cited
US2894848A
Cited
US2918405A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-12-08 | 1968-06-08 | 1968-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-12-08 | 1972-06-08 | 1972-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-12-08 | 1976-06-08 | 1976-12-08 | $7700.00 | Window Closed / Lapsed |