US2882141A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slow-acting fertilizer compositions
Assignee: Nitro-Form Agricultural Chemical Co
•
Filing: 1955-09-16
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Granted: 1959-04-14
•
Expires: 1975-09-16
Abstract
No abstract record available.
Inventors
- 👤 James M O'donnell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:20
CPC Classifications
C; C05; C05C; C05C9/00; C05C9/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
38 words
A SLOW-ACTING HIGH-LEVEL POLYMERIC FERTILIZER COMPOSITION COMPRISING (A) A UREA-FORMALDEHYDE RESIN AS A MAJOR COMPONENT AND (B) AN ETHYLENE AMINO CARBOXYLIC ACID COMPOUND INTERGRALLY ADMIXED IN THE POLYMER IN AMOUNT OF ABOUT 2-20% BY WEIGHT OF SAID COMPOSITION.
Claim 2
Dependent Claim
38 words
A SLOW-ACTING HIGH-LEVEL POLYMERIC FERTILIZER COMPOSITION COMPRISING (A) A UREA-FORMALDEHYDE RESIN AS A MAJOR COMPONENT AND (B) AN ETHYLENE AMINO CARBOXYLIC ACID COMPOUND INTERGRALLY ADMIXED IN THE POLYMER IN AMOUNT OF ABOUT 2-20% BY WEIGHT OF SAID COMPOSITION.
References Cited (Backward Citations)
US2502996A
Cited
US2618546A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-13 | 1962-10-13 | 1963-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-13 | 1966-10-13 | 1967-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-13 | 1970-10-13 | 1971-04-14 | $7700.00 | Window Closed / Lapsed |