US2831779A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Soil conditioners
Assignee: Individual
•
Filing: 1952-10-13
•
Granted: 1958-04-22
•
Expires: 1972-10-13
Abstract
No abstract record available.
Inventors
- 👤 John G Erickson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:15
CPC Classifications
C; C05; C05G; C05G3/00; C05G3/60; Y; Y10; Y10S; Y10S106/00; Y10S106/90
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
43 words
CLAY SOIL CONDITIONED WITH FROM 0.05 TO 1% BY WEIGHT OF A MONOMERIC AMINOQUATERNARY AMMONIUM COMPOUND WHICH IS SOLUBLE IN WATER AT LEAST TO THE EXTENT OF 0.1% BY WEIGHT AND IN WHICH THE AMINO IS SUFFICENTLY BASIC TO FORM AN ACETATE SALT.
Claim 2
Dependent Claim
43 words
CLAY SOIL CONDITIONED WITH FROM 0.05 TO 1% BY WEIGHT OF A MONOMERIC AMINOQUATERNARY AMMONIUM COMPOUND WHICH IS SOLUBLE IN WATER AT LEAST TO THE EXTENT OF 0.1% BY WEIGHT AND IN WHICH THE AMINO IS SUFFICENTLY BASIC TO FORM AN ACETATE SALT.
References Cited (Backward Citations)
US2214352A
Cited
US2378235A
Cited
US2589674A
Cited
US2614917A
Cited
US2625529A
Cited
US2751713A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-21 | 1961-10-21 | 1962-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-21 | 1965-10-21 | 1966-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-21 | 1969-10-21 | 1970-04-22 | $7700.00 | Window Closed / Lapsed |