Patent US2906601A successfully refreshed from Google Patents.
US2906601A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of water-soluble nitrogenphosphoric acid compounds
Assignee: Henkel AG and Co KGaA
•
Filing: 1956-12-18
•
Granted: 1959-09-29
•
Expires: 1976-12-18
Abstract
No abstract record available.
Inventors
- 👤 Koster Alfred
- 👤 Weldes Friedrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:20
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/45; C; C01; C01B; C01B21/00; C01B21/082; C01B21/087; C01B21/092; C01B21/0923
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
PROCESS FOR THE PREPARATION OF WATER-SOLUBLE, NITRO GEN-PHOSPERIC ACID COMPOUNDS, WHICH COMPRISES CONTACTING PHOSPEROUS PENTODXIDE WITH A SOLID AMMONIUM SALT IN A MOLAR RATIO OF PHOSPHORUS TO NITROGEN OF 1:1.25-3, WHEREBY COMPLETE REACTION OCCURS BETWEEN THE AMMONIA SALT IN SOLID STATE AND THE PHOSPEROUS PENTOXIDE TO PROVIDE SAID NITROGEN-PHOSPHORIC ACID COMPOUNDS, AND RECOVERING THE WATER-SOLUBLE, NITROGEN-PHOSPERORIC ACID COMPOUNDS FORMED.
Claim 2
Dependent Claim
59 words
PROCESS FOR THE PREPARATION OF WATER-SOLUBLE, NITRO GEN-PHOSPERIC ACID COMPOUNDS, WHICH COMPRISES CONTACTING PHOSPEROUS PENTODXIDE WITH A SOLID AMMONIUM SALT IN A MOLAR RATIO OF PHOSPHORUS TO NITROGEN OF 1:1.25-3, WHEREBY COMPLETE REACTION OCCURS BETWEEN THE AMMONIA SALT IN SOLID STATE AND THE PHOSPEROUS PENTOXIDE TO PROVIDE SAID NITROGEN-PHOSPHORIC ACID COMPOUNDS, AND RECOVERING THE WATER-SOLUBLE, NITROGEN-PHOSPERORIC ACID COMPOUNDS FORMED.
References Cited (Backward Citations)
US2122122A
Cited
US2708619A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-28 | 1963-03-30 | 1963-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-28 | 1967-03-30 | 1967-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-28 | 1971-03-30 | 1971-09-29 | $7700.00 | Window Closed / Lapsed |