US3357785A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shrinkproofing wool through serial impregnation with a diisocyanate having one or two terminal ester groups and a diamine
Assignee: Merck and Co Inc
•
Filing: 1963-10-08
•
Granted: 1967-12-12
•
Expires: 1983-10-08
Abstract
No abstract record available.
Inventors
- 👤 John D Garber
- 👤 Gordon M Ide
- 👤 Frederick M Meigs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 01:32
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/30; C08G18/32; C08G18/3225; C08G18/70; C08G18/72; C08G18/77; C08G18/771; D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/564
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
31 words
A PROCESS FOR THE SHRINKPROFFING OF WOOL WHICH COMPRISES SERIALLY IMPREGNATING WOOL WITH AN AQUEOUS EMULSION AND AN AQUEOUS DIAMINE DISPERSION, SAID EMULSION COMPRISING WATER AND A DIISOCYANATE OF THE FORMULA:
Claim 2
Dependent Claim
31 words
A PROCESS FOR THE SHRINKPROFFING OF WOOL WHICH COMPRISES SERIALLY IMPREGNATING WOOL WITH AN AQUEOUS EMULSION AND AN AQUEOUS DIAMINE DISPERSION, SAID EMULSION COMPRISING WATER AND A DIISOCYANATE OF THE FORMULA:
References Cited (Backward Citations)
US3084019A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-12-11 | 1971-06-12 | 1971-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-11 | 1975-06-12 | 1975-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-11 | 1979-06-12 | 1979-12-12 | $7700.00 | Window Closed / Lapsed |