US2537726A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyhydric alcohols
Assignee: General Mills Inc
•
Filing: 1946-10-24
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Granted: 1951-01-09
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Expires: 1966-10-24
Abstract
No abstract record available.
Inventors
- 👤 Wittcoff Harold
- 👤 Roach John Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:50
CPC Classifications
C; C07; C07D; C07D309/00; C07D309/32; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
NON-DISTILLABLE CROSS-LINKED POLYMERIC POLYFUNCTIONAL COMPOUNDS SELECTED FROM THE GROUP CONSISTING OF POLYHYDRIC ALCOHOLS AND AMINO ALCOHOLS, SAID COMPOUNDS RESULTING FROM THE SUBSTANTIALLY COMPLETE REACTION UNDER ALKALINE CONDITIONS OF A MONOMERIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF POLYHYDROXY COMPOUNDS AND AMINO HYDROXY COMPOUNDS WITH AN ALKYLATING AGENT CONTAINING A PLURALITY OF ALKYLATING GROUPS, THE TOTAL NUMBER OF GROUPS CAPABLE OF ENTERING THE ALKYLATION REACTION BEING AT LEAST 5, AND THE MOLECULAR RATIO OF ALKYLATING AGENT TO OTHER REACTANT BEING NOT SUBSTANTIALLY GREATER THAN ABOUT 2 TO 1.
Claim 2
Dependent Claim
87 words
NON-DISTILLABLE CROSS-LINKED POLYMERIC POLYFUNCTIONAL COMPOUNDS SELECTED FROM THE GROUP CONSISTING OF POLYHYDRIC ALCOHOLS AND AMINO ALCOHOLS, SAID COMPOUNDS RESULTING FROM THE SUBSTANTIALLY COMPLETE REACTION UNDER ALKALINE CONDITIONS OF A MONOMERIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF POLYHYDROXY COMPOUNDS AND AMINO HYDROXY COMPOUNDS WITH AN ALKYLATING AGENT CONTAINING A PLURALITY OF ALKYLATING GROUPS, THE TOTAL NUMBER OF GROUPS CAPABLE OF ENTERING THE ALKYLATION REACTION BEING AT LEAST 5, AND THE MOLECULAR RATIO OF ALKYLATING AGENT TO OTHER REACTANT BEING NOT SUBSTANTIALLY GREATER THAN ABOUT 2 TO 1.
References Cited (Backward Citations)
US1922459A
Cited
US2178173A
Cited
US2258892A
Cited
US2251236A
Cited
US2325589A
Cited
US2441595A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-08 | 1954-07-10 | 1955-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-08 | 1958-07-10 | 1959-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-08 | 1962-07-10 | 1963-01-09 | $7700.00 | Window Closed / Lapsed |