Patent US2247213A successfully refreshed from Google Patents.
US2980657A
Expired / Lapsed
US
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Quaternary ammonium compounds of polymers of acrylamido type and methods for making them
Assignee: Rohm and Haas Co
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Filing: 1954-07-06
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Granted: 1961-04-18
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Expires: 1974-07-06
Abstract
No abstract record available.
Inventors
- 👤 Melamed Sidney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:30
CPC Classifications
C; C08; C08F; C08F220/00; C08F220/02; C08F220/10; C08F220/12; C08F220/14; C08F8/00; C08F8/44; Y; Y10; Y10S; Y10S526/00; Y10S526/923
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
AS A COMPOSITION OF MATTER, A WATER-SOLUBLE POLYMERIZATION PRODUCT WHICH CONTAINS COPOLYMERIZED (1) AT LEAST ONE MOLE PERCENT OF AN AMIDE OF ACRYLIC ACID CONTAINING IN THE AMIDE PORTION OF THE MOLECULE ONE QUATERNARY NITROGEN ATOM WHICH BY ONE OF ITS FOUR VALENCES IS BOUND TO AMIDE NITROGEN BY AN ALKYLENE RADICAL CONTAINING AT LEAST TWO AND AT THE MOST THREE CARBON ATOMS, AND THE REMAINING THREE VALENCES OF THE QUARTERNARY NITROGEN ATOM ARE BOUND TO SATURATED ALIPHATIC RADICALS, AND (2) AT LEAST ONE OTHER POLYMERIZABLE MONOETHYLENICALLY UNSATURATED CONPOUND, SAID COPOLYMER PRODUCT COMPRISING AT LEAST ONE ESTER OF ACRYLIC ACID WITH AN ALKANOL HAVING 1 TO 4 CARBON ATOMS AND AT LEAST 0.1 MOLE PERCENT OF ACRYLIC ACID, THE TOTAL POLYMERIZED UNITS AMOUNTING TO 100 MOLE PERCENT.
Claim 2
Dependent Claim
127 words
AS A COMPOSITION OF MATTER, A WATER-SOLUBLE POLYMERIZATION PRODUCT WHICH CONTAINS COPOLYMERIZED (1) AT LEAST ONE MOLE PERCENT OF AN AMIDE OF ACRYLIC ACID CONTAINING IN THE AMIDE PORTION OF THE MOLECULE ONE QUATERNARY NITROGEN ATOM WHICH BY ONE OF ITS FOUR VALENCES IS BOUND TO AMIDE NITROGEN BY AN ALKYLENE RADICAL CONTAINING AT LEAST TWO AND AT THE MOST THREE CARBON ATOMS, AND THE REMAINING THREE VALENCES OF THE QUARTERNARY NITROGEN ATOM ARE BOUND TO SATURATED ALIPHATIC RADICALS, AND (2) AT LEAST ONE OTHER POLYMERIZABLE MONOETHYLENICALLY UNSATURATED CONPOUND, SAID COPOLYMER PRODUCT COMPRISING AT LEAST ONE ESTER OF ACRYLIC ACID WITH AN ALKANOL HAVING 1 TO 4 CARBON ATOMS AND AT LEAST 0.1 MOLE PERCENT OF ACRYLIC ACID, THE TOTAL POLYMERIZED UNITS AMOUNTING TO 100 MOLE PERCENT.
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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) | 1964-04-17 | 1964-10-17 | 1965-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-17 | 1968-10-17 | 1969-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-17 | 1972-10-17 | 1973-04-18 | $7700.00 | Window Closed / Lapsed |