US2807910A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Soil conditioning with polyquaternary ammonium compounds
Assignee: General Mills Inc
•
Filing: 1952-10-09
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Granted: 1957-10-01
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Expires: 1972-10-09
Abstract
No abstract record available.
Inventors
- 👤 John G Erickson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:45
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/06; C07D213/16; C07D213/20; C07D215/00; C07D215/02; C07D215/04; C07D215/10; C07D295/00; C07D295/04; C07D295/08; C07D295/084; C07D295/088; C07D333/00; C07D333/02; C07D333/04; C07D333/26; C07D333/30; C07D333/36; Y; Y10; Y10S; Y10S106/00; Y10S106/90
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
PROCESS OF CONDITIONING CLAY SOIL WHICH COMPRISES ADDING THERETO A POLYQUATERNARY AMMONIUM COMPOUND CONTAINING 2 TO 5 QUANTERNARY GROUPS IN WHICH THE QUATERNARY NITROGEN ATOMS ARE LINKED THROUGH AN ALKYLENE RADICAL CONTAINING 2 TO 6 CARBON ATOMS IN THE AMOUNT OF FROM 0.05-0.50% BASED ON THE WEIGHT OF THE SOIL.
Claim 2
Dependent Claim
50 words
PROCESS OF CONDITIONING CLAY SOIL WHICH COMPRISES ADDING THERETO A POLYQUATERNARY AMMONIUM COMPOUND CONTAINING 2 TO 5 QUANTERNARY GROUPS IN WHICH THE QUATERNARY NITROGEN ATOMS ARE LINKED THROUGH AN ALKYLENE RADICAL CONTAINING 2 TO 6 CARBON ATOMS IN THE AMOUNT OF FROM 0.05-0.50% BASED ON THE WEIGHT OF THE SOIL.
References Cited (Backward Citations)
US2113606A
Cited
US2370031A
Cited
US2271378A
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US2378235A
Cited
US2519999A
Cited
US2614917A
Cited
US2625471A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-30 | 1961-04-01 | 1961-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-30 | 1965-04-01 | 1965-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-30 | 1969-04-01 | 1969-10-01 | $7700.00 | Window Closed / Lapsed |