US2820719A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for rendering fabrics water repellent
Assignee: Davies Young Soap Co
•
Filing: 1952-08-27
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Granted: 1958-01-21
•
Expires: 1972-08-27
Abstract
No abstract record available.
Inventors
- 👤 Ralf B Trusler
- 👤 Sutton Barbara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:19
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/39; D06M15/41; D06M13/00; D06M13/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
A PROCESS FOR RENDERING ARTICLES MADE FROM FIBROUS MATERIALS WATER-REPELLENT, SAID PROCESS COMPRISING THE STEPS OF FIRST TREATING SAID ARTICLES SO AS TO RENDER THE SAME CONDUCTIVE OF STATIC ELECTRICITY BY APPLYING THERETO A SOLUTION WHICH IS CONDUCTIVE OF ELECTRICALLY, SAID SOLUTION COMPRISING A QUATERNARY AMMONIUM COMPOUND WHICH DOES NOT RENDER THE FIBROUS ARTICLES READILY WETTABLE BY WATER, DISSOLVED IN PETROLEUM NAPHTHA, AND THEN APPLYING TO THE THUS TREATED FIBROUS MATERAL AN ORGANIC SOLVENTNT
Claim 2
Dependent Claim
74 words
A PROCESS FOR RENDERING ARTICLES MADE FROM FIBROUS MATERIALS WATER-REPELLENT, SAID PROCESS COMPRISING THE STEPS OF FIRST TREATING SAID ARTICLES SO AS TO RENDER THE SAME CONDUCTIVE OF STATIC ELECTRICITY BY APPLYING THERETO A SOLUTION WHICH IS CONDUCTIVE OF ELECTRICALLY, SAID SOLUTION COMPRISING A QUATERNARY AMMONIUM COMPOUND WHICH DOES NOT RENDER THE FIBROUS ARTICLES READILY WETTABLE BY WATER, DISSOLVED IN PETROLEUM NAPHTHA, AND THEN APPLYING TO THE THUS TREATED FIBROUS MATERAL AN ORGANIC SOLVENTNT
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-20 | 1961-07-22 | 1962-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-20 | 1965-07-22 | 1966-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-20 | 1969-07-22 | 1970-01-21 | $7700.00 | Window Closed / Lapsed |