US2669510A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fertilizer conditioner
Assignee: Zonolite Co
•
Filing: 1953-04-06
•
Granted: 1954-02-16
•
Expires: 1973-04-06
Abstract
No abstract record available.
Inventors
- 👤 Harry A Dresser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:56
CPC Classifications
B; B01; B01J; B01J2/00; B01J2/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
18 words
A FREE-FLOWING FERTILIZER COMPRISING A COMMERCIAL FERTILIZER COMPOSITION IN ADMIXTURE WITH UP TO ABOUT 1.5% OF EXFOLIATED VERMICULITE.
Claim 2
Dependent Claim
18 words
A FREE-FLOWING FERTILIZER COMPRISING A COMMERCIAL FERTILIZER COMPOSITION IN ADMIXTURE WITH UP TO ABOUT 1.5% OF EXFOLIATED VERMICULITE.
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) | 1957-02-15 | 1957-08-17 | 1958-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-15 | 1961-08-17 | 1962-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-15 | 1965-08-17 | 1966-02-16 | $7700.00 | Window Closed / Lapsed |