US2833640A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and composition for ammoniation of soils
Assignee: Dow Chemical Co
•
Filing: 1954-09-10
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Granted: 1958-05-06
•
Expires: 1974-09-10
Abstract
No abstract record available.
Inventors
- 👤 Frederick C Bersworth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:55
CPC Classifications
C; C07; C07C; C07C255/00; C05; C05C; C05C3/00; Y; Y10; Y10S; Y10S71/00; Y10S71/02; Y10S71/902; Y10S71/903
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
23 words
A COMPOSITION FOR APPLICATION TO SOIL TO INDUCE AMMONIATION THEREOF COMPRISING, A SOLID CARRIER BLENDED WITH A COMPOUND HAVING THE FOLLOWING GENERAL FORMULA:
Claim 2
Dependent Claim
23 words
A COMPOSITION FOR APPLICATION TO SOIL TO INDUCE AMMONIATION THEREOF COMPRISING, A SOLID CARRIER BLENDED WITH A COMPOUND HAVING THE FOLLOWING GENERAL FORMULA:
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-05 | 1961-11-04 | 1962-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-05 | 1965-11-04 | 1966-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-05 | 1969-11-04 | 1970-05-06 | $7700.00 | Window Closed / Lapsed |