US3317481A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chemical compositions and process
Assignee: EIDP Inc
•
Filing: 1964-07-24
•
Granted: 1967-05-02
•
Expires: 1984-07-24
Abstract
No abstract record available.
Inventors
- 👤 Mortimer A Youker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:40
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/70; C08G18/72; C08G18/721; C08G18/727; C08G18/28; C08G18/30; C08G18/302; Y; Y10; Y10S; Y10S528/00; Y10S528/902
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
60 words
A SOLUTION OF (A) THE UNDISTILLED PHOSGENATION PRODUCT RESULTING FROM THE PHOSGENATION OF AN AROMATIC POLYAMINE, SAID PRODUCT CONTAINING AROMATIC POLYISOCYANATES IN (B) A SOLBENT SELECTED FROM THE GROUP CONCONTAINING UP TO 25 CARBON ATOMS, DIALKYL SULFOXIDES CONTAINING UP TO 8 CARBON ATOMS, N-ALKYLATED SULFONAMIDES CONTAINING UP TO 25 CARBON ATOMS AND TETRAALKYL UREAS CONTAINING UP TO 25 CARBON ATOMS.
Claim 2
Dependent Claim
60 words
A SOLUTION OF (A) THE UNDISTILLED PHOSGENATION PRODUCT RESULTING FROM THE PHOSGENATION OF AN AROMATIC POLYAMINE, SAID PRODUCT CONTAINING AROMATIC POLYISOCYANATES IN (B) A SOLBENT SELECTED FROM THE GROUP CONCONTAINING UP TO 25 CARBON ATOMS, DIALKYL SULFOXIDES CONTAINING UP TO 8 CARBON ATOMS, N-ALKYLATED SULFONAMIDES CONTAINING UP TO 25 CARBON ATOMS AND TETRAALKYL UREAS CONTAINING UP TO 25 CARBON ATOMS.
Claim 3
Dependent Claim
18 words
THE PROCESS COMPRISING CONTACTIG THE COMPOSITION OF CLAIM 1 WITH WATER WHEREBY AN AMORPHOUS POLYUREA RESIN IS FORMED.
References Cited (Backward Citations)
US2597025A
Cited
US2757184A
Cited
US2875226A
Cited
US2884363A
Cited
US2884361A
Cited
US2884362A
Cited
US2888438A
Cited
GB871580A
Cited
US3253031A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-05-01 | 1970-10-31 | 1971-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-01 | 1974-10-31 | 1975-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-01 | 1978-10-31 | 1979-05-02 | $7700.00 | Window Closed / Lapsed |