US2826515A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of sizing nylon textile materials with coal acid compounds and resulting article
Assignee: Dow Chemical Co
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Filing: 1956-07-30
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Granted: 1958-03-11
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Expires: 1976-07-30
Abstract
No abstract record available.
Inventors
- 👤 Herbert B Rickert
- 👤 Robert S Montgomery
- 👤 Marshall W Duke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:07
CPC Classifications
D; D06; D06M; D06M11/00; D06M11/73; D06M11/74
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
METHOD FOR FINISHING NYLON YARN TO FACILITATE ITS CONSTRUCTION INTO CLOTH AND FABRIC WHICH COMPRISES DEPOSITING ON THE SURFACE OF THE YARN UP TO ABOUT 20 PERCENT BY WEIGHT, BASED ON THE WEIGHT OF THE YARN, OF A PLASTIFIED FILM OF COAL ACID COMPOUNDS SELECTED FROMTHE GROUP CONSISTING OF FREE COAL ACIDS, WATER-SOLUBLE SALTS OF FREE COAL ACIDS AND MIXTURES THEREOF, SAID COAL ACIDS BEING THE WATE-SOLUBLE MIXED AROMATIC POLYCARBOXYLIC ACIDS THAT ARE THE PRODUCTS OF THE OXIDATION OF COAL AND THE LIKE CARBONACEOUS MATERIALS, WHICH ACIDS HAVE AN AVERAGE MOLECULAR WEIGHT OF ABOUT 250, AN AVERAGE EQUIVALENT WEIGHT OF ABOUT 80, AND CONTAIN AN AVERAGE OF FROM ABOUT 2.5 TO 5 CARBOXYLIC GROUPS PER AROMATIC NUCLEI IN THEIR MOLECULE.
Claim 2
Dependent Claim
120 words
METHOD FOR FINISHING NYLON YARN TO FACILITATE ITS CONSTRUCTION INTO CLOTH AND FABRIC WHICH COMPRISES DEPOSITING ON THE SURFACE OF THE YARN UP TO ABOUT 20 PERCENT BY WEIGHT, BASED ON THE WEIGHT OF THE YARN, OF A PLASTIFIED FILM OF COAL ACID COMPOUNDS SELECTED FROMTHE GROUP CONSISTING OF FREE COAL ACIDS, WATER-SOLUBLE SALTS OF FREE COAL ACIDS AND MIXTURES THEREOF, SAID COAL ACIDS BEING THE WATE-SOLUBLE MIXED AROMATIC POLYCARBOXYLIC ACIDS THAT ARE THE PRODUCTS OF THE OXIDATION OF COAL AND THE LIKE CARBONACEOUS MATERIALS, WHICH ACIDS HAVE AN AVERAGE MOLECULAR WEIGHT OF ABOUT 250, AN AVERAGE EQUIVALENT WEIGHT OF ABOUT 80, AND CONTAIN AN AVERAGE OF FROM ABOUT 2.5 TO 5 CARBOXYLIC GROUPS PER AROMATIC NUCLEI IN THEIR MOLECULE.
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) | 1961-03-10 | 1961-09-09 | 1962-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-10 | 1965-09-09 | 1966-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-10 | 1969-09-09 | 1970-03-11 | $7700.00 | Window Closed / Lapsed |