Patent US2864685A successfully refreshed from Google Patents.
US2864685A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for mixed fertilizer containing ureaform
Assignee: Honeywell International Inc
•
Filing: 1955-07-14
•
Granted: 1958-12-16
•
Expires: 1975-07-14
Abstract
No abstract record available.
Inventors
- 👤 Charles E Waters
- 👤 Joseph A Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:09
CPC Classifications
C; C05; C05C; C05C9/00; C05C9/02; C05B; C05B1/00; C05B1/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
IN THE PROCESS OF MAKING A MIXED FERTILIZER IN WHICH NITROGEN IS SUPPLIED IN THE FORM OF A REACTION PRODUCT OF UREA AND FORMALDEHYDE, THE STEPS COMPRISING MIXING A SUPER PHOSPHATE WITH A METALLIC BASE IN AN AMOUNT EQUAL TO 1.4 TO 1.9 MOL EQUIVALENTS OF BASE PER MOL OF P2O5 IN THE PHOSPHATE, MIXING IN A UREA FORMALDEHYDE RESIN FERTILIZER AND BLENDING TO FORM A MIXTURE HAVING A PH OF 6.0 TO 7.5.
Claim 2
Dependent Claim
74 words
IN THE PROCESS OF MAKING A MIXED FERTILIZER IN WHICH NITROGEN IS SUPPLIED IN THE FORM OF A REACTION PRODUCT OF UREA AND FORMALDEHYDE, THE STEPS COMPRISING MIXING A SUPER PHOSPHATE WITH A METALLIC BASE IN AN AMOUNT EQUAL TO 1.4 TO 1.9 MOL EQUIVALENTS OF BASE PER MOL OF P2O5 IN THE PHOSPHATE, MIXING IN A UREA FORMALDEHYDE RESIN FERTILIZER AND BLENDING TO FORM A MIXTURE HAVING A PH OF 6.0 TO 7.5.
References Cited (Backward Citations)
US1953419A
Cited
US2136793A
Cited
US2415705A
Cited
US2592809A
Cited
US2643948A
Cited
US2618546A
Cited
US2644806A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-15 | 1962-06-16 | 1962-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-15 | 1966-06-16 | 1966-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-15 | 1970-06-16 | 1970-12-16 | $7700.00 | Window Closed / Lapsed |