US2770540A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid fertilizers
Assignee: Individual
•
Filing: 1953-06-19
•
Granted: 1956-11-13
•
Expires: 1973-06-19
Abstract
No abstract record available.
Inventors
- 👤 Donald E Vierling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:36
CPC Classifications
C; C05; C05B; C05B7/00; Y; Y10; Y10S; Y10S47/00; Y10S47/10; Y10S71/00; Y10S71/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
THE METHOD OF MANUFACTURING A LIQUID FERTILIZER WHICH INCLUDES ADDING TO WATER SUFFICIENT POTASSIUM HYDROXIDE TO OBTAIN THE DESIRED PERCENTAGE OF POTASSIUM OXIDE, NEUTRALIZING THE POTASSIUM HYDROXIDE WITH NITRIC ACID, ADDING SUFFICIENT PHOSPHORIC ACID TO OBTAIN THE DESIRED PERCENTAGE OF PHOSPHORIC PENTOXIDE, NEUTRALIZING THE PHOSPHORIC ACID WITH AMMONIA, AND ADDING EQUAL MOLECULAR WEIGHTS OF AMMONIA AND NITRIC ACID TO OBTAIN THE DESIRED PERCENTAGE OF NITROGEN.
Claim 2
Independent Claim
65 words
THE METHOD OF MANUFACTURING A LIQUID FERTILIZER WHICH INCLUDES ADDING TO WATER SUFFICIENT POTASSIUM HYDROXIDE TO OBTAIN THE DESIRED PERCENTAGE OF POTASSIUM OXIDE, NEUTRALIZING THE POTASSIUM HYDROXIDE WITH NITRIC ACID, ADDING SUFFICIENT PHOSPHORIC ACID TO OBTAIN THE DESIRED PERCENTAGE OF PHOSPHORIC PENTOXIDE, NEUTRALIZING THE PHOSPHORIC ACID WITH AMMONIA, AND ADDING EQUAL MOLECULAR WEIGHTS OF AMMONIA AND NITRIC ACID TO OBTAIN THE DESIRED PERCENTAGE OF NITROGEN.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-11-13 | 1960-05-14 | 1960-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-13 | 1964-05-14 | 1964-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-13 | 1968-05-14 | 1968-11-13 | $7700.00 | Window Closed / Lapsed |