Patent US2794044A successfully refreshed from Google Patents.
US2794044A
Expired / Lapsed
US
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Synthesis of iminodiacetonitrile
Assignee: EIDP Inc
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Filing: 1955-08-30
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Granted: 1957-05-28
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Expires: 1975-08-30
Abstract
No abstract record available.
Inventors
- 👤 William R Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:26
CPC Classifications
C; C07; C07C; C07C255/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
44 words
THE PROCESS FOR THE SYNTHESIS OF IMINODIACETONITRILE WHICH COMPRISES REACTING TOGETHER AMMONIA, FORMALDEHYDE AND HYDROGEN CYANIDE IN THE MOLAR RATIO OF ABOUT 2:3:3 IN AQUEOUS ACID SOLUTION HAVING A PH BETWEEN ABOUT 5.5 AND 6.5 AND A TEMPERATURE IN THE RANGE 0* TO 50*C.
Claim 2
Dependent Claim
44 words
THE PROCESS FOR THE SYNTHESIS OF IMINODIACETONITRILE WHICH COMPRISES REACTING TOGETHER AMMONIA, FORMALDEHYDE AND HYDROGEN CYANIDE IN THE MOLAR RATIO OF ABOUT 2:3:3 IN AQUEOUS ACID SOLUTION HAVING A PH BETWEEN ABOUT 5.5 AND 6.5 AND A TEMPERATURE IN THE RANGE 0* TO 50*C.
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) | 1960-05-27 | 1960-11-26 | 1961-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-05-27 | 1964-11-26 | 1965-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-05-27 | 1968-11-26 | 1969-05-28 | $7700.00 | Window Closed / Lapsed |