US3019212A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diisocyanate-modified acid-treated polyethers
Assignee: Armstrong World Industries Inc
•
Filing: 1958-11-07
•
Granted: 1962-01-30
•
Expires: 1978-11-07
Abstract
No abstract record available.
Inventors
- 👤 John A Parker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:58
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/67; C08G18/6795
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
43 words
IN THE METHOD OF MAKING AN ORGANIC DIISOCYANATEMODIFIED POLYETHER BY FORMING A POLYETHER AND REACTING SAID POLYETHER WITH AN ORGANIC DIISOCYANATE, THE IMPROVED METHOD OF MAKING A GELLED PRODUCT HAVING A REAL, THREEDIMENSIONAL NETWORK WHICH COMPRISES ADDING TO A POLYETHER HAVING THE FORMULA
Claim 2
Dependent Claim
43 words
IN THE METHOD OF MAKING AN ORGANIC DIISOCYANATEMODIFIED POLYETHER BY FORMING A POLYETHER AND REACTING SAID POLYETHER WITH AN ORGANIC DIISOCYANATE, THE IMPROVED METHOD OF MAKING A GELLED PRODUCT HAVING A REAL, THREEDIMENSIONAL NETWORK WHICH COMPRISES ADDING TO A POLYETHER HAVING THE FORMULA
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) | 1965-01-29 | 1965-07-31 | 1966-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-29 | 1969-07-31 | 1970-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-29 | 1973-07-31 | 1974-01-30 | $7700.00 | Window Closed / Lapsed |