Patent US2625686A successfully refreshed from Google Patents.
Patent US2946820A successfully refreshed from Google Patents.
US2946820A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High bulk density nitroguanidine
Assignee: Individual
•
Filing: 1950-02-16
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Granted: 1960-07-26
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Expires: 1970-02-16
Abstract
No abstract record available.
Inventors
- 👤 Ronald A Henry
- 👤 Cohen Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:08
CPC Classifications
C; C07; C07C; C07C279/00; C07C279/30; C07C279/32; C07C279/36; C07C277/00; C07C277/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
THE METHOD OF PRODUCING HIGH BULK-DENSITY NITROGUANIDINE WHICH COMPRISES THE STEP OF CRYSTALLIZING THE SAME FROM A 1 TO 8% AQUEOUS SOLUTION OF NITROGUANIDINE HAVING A PH OF FROM 2 TO 8 IN THE PRESENCE OF AN ADDITIVE CHOSEN FROM THE GROUP CONSISTING OF NITROGUANYL HYDRAZONE OF BENZALDEHYDE, NITROGUANYL HYDRAZONE OF VANILLIN, NITROGUANYL HYDRAZONE OF ACETOPHENONE, NITROGUANYL HYDRAZONE OF SALICYLALDEHYDE, (-PHENYL-3-NITROGUANIDINE, 1(2-METHYLPHENYL)-3-NITROGGUANIDINE, 1-(3-METHYLPHENYL)3-NITROGUANIDINE, 1-(4-METHYLPHENY)-3-NITROGUANIDINE, 1(2-ETHOXYPHENYL)-3-NITROGUANIDINE, 1-(2-METHOXYPHENYL)3-NITROGGUANIDINE, AND 1-(4-METHOXYPHENYL)-3-NITROGUANIDINE.
Claim 2
Independent Claim
68 words
THE METHOD OF PRODUCING HIGH BULK-DENSITY NITROGUANIDINE WHICH COMPRISES THE STEP OF CRYSTALLIZING THE SAME FROM A 1 TO 8% AQUEOUS SOLUTION OF NITROGUANIDINE HAVING A PH OF FROM 2 TO 8 IN THE PRESENCE OF AN ADDITIVE CHOSEN FROM THE GROUP CONSISTING OF NITROGUANYL HYDRAZONE OF BENZALDEHYDE, NITROGUANYL HYDRAZONE OF VANILLIN, NITROGUANYL HYDRAZONE OF ACETOPHENONE, NITROGUANYL HYDRAZONE OF SALICYLALDEHYDE, (-PHENYL-3-NITROGUANIDINE, 1(2-METHYLPHENYL)-3-NITROGGUANIDINE, 1-(3-METHYLPHENYL)3-NITROGUANIDINE, 1-(4-METHYLPHENY)-3-NITROGUANIDINE, 1(2-ETHOXYPHENYL)-3-NITROGUANIDINE, 1-(2-METHOXYPHENYL)3-NITROGGUANIDINE, AND 1-(4-METHOXYPHENYL)-3-NITROGUANIDINE.
References Cited (Backward Citations)
US2395857A
Cited
US2445478A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-26 | 1964-01-25 | 1964-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-26 | 1968-01-25 | 1968-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-26 | 1972-01-25 | 1972-07-26 | $7700.00 | Window Closed / Lapsed |