US3482957A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for suppressing the nitrification of ammonium nitrogen in soil and composition therefor
Assignee: TOYO KOTSU IND Inc
•
Filing: 1966-11-21
•
Granted: 1969-12-09
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Expires: 1986-11-21
Abstract
No abstract record available.
Inventors
- 👤 Kisaburo Ueno
- 👤 Akira Hirose
- 👤 Tetsuichi Shinozawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:03
CPC Classifications
C; C05; C05G; C05G3/00; C05G3/90; Y; Y02; Y02P; Y02P60/00; Y02P60/20; Y02P60/21; Y10; Y10S; Y10S71/00; Y10S71/902
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2430094A
Cited
US2259222A
Cited
US2238973A
Cited
GB798463A
Cited
US3011885A
Cited
US3284188A
Cited
US3235558A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-08 | 1973-06-09 | 1973-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-08 | 1977-06-09 | 1977-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-08 | 1981-06-09 | 1981-12-09 | $7700.00 | Window Closed / Lapsed |