US2828223A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of coating leather with polymers containing morpholino groups and the resulting article
Assignee: Rohm and Haas Co
•
Filing: 1955-03-21
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Granted: 1958-03-25
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Expires: 1975-03-21
Abstract
No abstract record available.
Inventors
- 👤 Paul W Mcwherter
- 👤 Benjamin B Kine
- 👤 Hugo A Alps
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:58
CPC Classifications
C; C14; C14C; C14C11/00; C14C11/003; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/31909; Y10T428/31913; Y10T428/3192; Y10T428/31938
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
36 words
AS AN ARTICLE OF MANUFACTURE, A LEATHER HAVING A COATING THEREON COMPRISING A WATER-INSOLUBLE LINEAR POLYMER OF MONOETHYLENICALLY UNSATURATED MOLECULES COMPRISING AT LEAST 3% BY WEIGHT OF A MONOMERIC COMPOUND HAVING THE STRUCTURE OF THE FORMULA
Claim 2
Dependent Claim
36 words
AS AN ARTICLE OF MANUFACTURE, A LEATHER HAVING A COATING THEREON COMPRISING A WATER-INSOLUBLE LINEAR POLYMER OF MONOETHYLENICALLY UNSATURATED MOLECULES COMPRISING AT LEAST 3% BY WEIGHT OF A MONOMERIC COMPOUND HAVING THE STRUCTURE OF THE FORMULA
References Cited (Backward Citations)
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Cited
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US2204520A
Cited
US2138763A
Cited
US2374678A
Cited
US2430479A
Cited
US2601251A
Cited
US2694688A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-24 | 1961-09-23 | 1962-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-24 | 1965-09-23 | 1966-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-24 | 1969-09-23 | 1970-03-25 | $7700.00 | Window Closed / Lapsed |