US2695913A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkylaryl urethans
Assignee: Universal Oil Products Co
•
Filing: 1950-08-30
•
Granted: 1954-11-30
•
Expires: 1970-08-30
Abstract
No abstract record available.
Inventors
- 👤 Herman S Bloch
- 👤 Donald R Strehlau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:48
CPC Classifications
C; C07; C07C; C07C271/00; C07C271/06; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/07; Y10S516/905; Y10S516/914; Y10S516/915
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
AN ALKYLARYL HYDROCARBON N-SUBSTITUTED URETHAN HAVING THE EMPIRICAL FORMULA: R(R'')N-AR-NHCOOZ, WHEREIN AR IS A POLYVALENT ARYL HYDROCARBON NUCLEUS SELECTED FROM THE GROUP CONSISTING OF THE MONO- AND BICYCLIC ARYL HYDROCARBONS, N IS A NUMERAL SELECTED FROM THE GROUP CONSISTING OF 0, 1, AND 2, R IS AN ALKYL GROUP CONTAINING FROM 3 TO ABOUT 15 CARBON ATOMS, R'' IS AN ALKYL GROUP CONTAINING FROM 1 TO 2 CARBON ATOMS, AND Z IS A MONOVALENT RADICAL OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF POLYOXY ALKYLENE GLYCOL, A POLYOXYALKYLENE GLYCOL ETHER, A POLYOXY ALKYLENE GLYCOL ESTER, A POLYHYDROXY-SUBSTITUTED PARAFFINIC HYDROCARBON, A POLYHYDROXY-SUBSTUTUTED CYCLOPARAFFINIC HYDROCRBON, AND A CARBOHYDRATE.
Claim 2
Dependent Claim
107 words
AN ALKYLARYL HYDROCARBON N-SUBSTITUTED URETHAN HAVING THE EMPIRICAL FORMULA: R(R'')N-AR-NHCOOZ, WHEREIN AR IS A POLYVALENT ARYL HYDROCARBON NUCLEUS SELECTED FROM THE GROUP CONSISTING OF THE MONO- AND BICYCLIC ARYL HYDROCARBONS, N IS A NUMERAL SELECTED FROM THE GROUP CONSISTING OF 0, 1, AND 2, R IS AN ALKYL GROUP CONTAINING FROM 3 TO ABOUT 15 CARBON ATOMS, R'' IS AN ALKYL GROUP CONTAINING FROM 1 TO 2 CARBON ATOMS, AND Z IS A MONOVALENT RADICAL OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF POLYOXY ALKYLENE GLYCOL, A POLYOXYALKYLENE GLYCOL ETHER, A POLYOXY ALKYLENE GLYCOL ESTER, A POLYHYDROXY-SUBSTITUTED PARAFFINIC HYDROCARBON, A POLYHYDROXY-SUBSTUTUTED CYCLOPARAFFINIC HYDROCRBON, AND A CARBOHYDRATE.
References Cited (Backward Citations)
US2041733A
Cited
US2197479A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-11-29 | 1958-05-31 | 1958-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-29 | 1962-05-31 | 1962-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-29 | 1966-05-31 | 1966-11-30 | $7700.00 | Window Closed / Lapsed |