US2892736A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sizing polyester yarns with an ethylene-maleic interpolymer
Assignee: Monsanto Chemicals Ltd
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Filing: 1955-12-30
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Granted: 1959-06-30
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Expires: 1975-12-30
Abstract
No abstract record available.
Inventors
- 👤 John H Johnson
- 👤 Joseph E Fields
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:14
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/21; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2964; Y10T428/2967; Y10T428/2969
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
POLYESTER YARN SIZED WITH A WARE-SOLUBLE FREE ACID FORM OF AN INTERPOLYMER OF ETHYLENE WITH AT LEAST ONE MEMBER OF THE GROUP CONSISTING OF MALEIC ANHYDRIDE AND ACID ESTERS OF MALEIC ACID, SAID INTERPOLYMER IN SAID FREE ACID FORM HAVING FROM ZERO TO 100 PERCENT OF ITS MALEIC UNITS MONO-ESTERIFIED WITH AN ALIPHATIC ALCOHOL, SAID INTERPOLYMER IN SAID FREE ACID FORM HAVING A SPECIFIC VISCOSITY OF AT LEAST ABOUT 0.1 AS DETERMINED ON A ONE WEIGHT PERCENT SOLUTION THEREOF IN DIMETHYLFORMAMIDE AT 25* C.
Claim 2
Dependent Claim
84 words
POLYESTER YARN SIZED WITH A WARE-SOLUBLE FREE ACID FORM OF AN INTERPOLYMER OF ETHYLENE WITH AT LEAST ONE MEMBER OF THE GROUP CONSISTING OF MALEIC ANHYDRIDE AND ACID ESTERS OF MALEIC ACID, SAID INTERPOLYMER IN SAID FREE ACID FORM HAVING FROM ZERO TO 100 PERCENT OF ITS MALEIC UNITS MONO-ESTERIFIED WITH AN ALIPHATIC ALCOHOL, SAID INTERPOLYMER IN SAID FREE ACID FORM HAVING A SPECIFIC VISCOSITY OF AT LEAST ABOUT 0.1 AS DETERMINED ON A ONE WEIGHT PERCENT SOLUTION THEREOF IN DIMETHYLFORMAMIDE AT 25* C.
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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) | 1962-06-29 | 1962-12-29 | 1963-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-29 | 1966-12-29 | 1967-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-29 | 1970-12-29 | 1971-06-30 | $7700.00 | Window Closed / Lapsed |