Patent US4831394A successfully refreshed from Google Patents.
Patent US3208093A successfully refreshed from Google Patents.
US3208093A
Expired / Lapsed
US
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Tack cloth coated with plasticized synthetic resin and method for preparing same
Assignee: FRED M GREIDER
•
Filing: 1960-05-31
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Granted: 1965-09-28
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Expires: 1980-05-31
Abstract
No abstract record available.
Inventors
- 👤 Webster H Hansen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:00
CPC Classifications
A; A47; A47L; A47L25/00; A47L25/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
AN IMPROVED TACK CLOTH FOR USE IN REMOVING DUST AND FOREIGN PARTICLES FROM SURFACES WITHOUT ADHERING TO THE HAND OF A USER, SAID CLOTH CONSISTING ESSENTIALLY OF FIBROUS BACKING MATERIAL HAVING STABLY DEPOSITED THEREON A COMPOSITION FORMED OF TWO NORMALLY LIQUID PLASTICIZERS, ONE BEING A PHTHALATE ESTER AND THE OTHER A PHOSPHATE ESTER PLASTICIZER, INTIMATELY DISPERSED AMONG RESINOUS POLYMER PARTICLES OF NO LARGER THAN ABOUT 0.5 MICRON, SAID POLYMER BEING OBTAINED BY POLYMERIZATION OF AT LEAST ONE COMPOUND CONTAINING A POLYMERIZABLE VINYLIDENE GROUP AND WHICH PLASTICIZER-POLYMER PARTICLES ARE COALESCED IN LARGER MASSES AND DEPOSITED ON SAID MATERIAL, THE TOTAL MINIMUM WEIGHT OF PLASTICIZER BEING APPROXIMATELY EQUAL TO THE TOTAL WEIGHT OF POLYMER.
Claim 2
Dependent Claim
112 words
AN IMPROVED TACK CLOTH FOR USE IN REMOVING DUST AND FOREIGN PARTICLES FROM SURFACES WITHOUT ADHERING TO THE HAND OF A USER, SAID CLOTH CONSISTING ESSENTIALLY OF FIBROUS BACKING MATERIAL HAVING STABLY DEPOSITED THEREON A COMPOSITION FORMED OF TWO NORMALLY LIQUID PLASTICIZERS, ONE BEING A PHTHALATE ESTER AND THE OTHER A PHOSPHATE ESTER PLASTICIZER, INTIMATELY DISPERSED AMONG RESINOUS POLYMER PARTICLES OF NO LARGER THAN ABOUT 0.5 MICRON, SAID POLYMER BEING OBTAINED BY POLYMERIZATION OF AT LEAST ONE COMPOUND CONTAINING A POLYMERIZABLE VINYLIDENE GROUP AND WHICH PLASTICIZER-POLYMER PARTICLES ARE COALESCED IN LARGER MASSES AND DEPOSITED ON SAID MATERIAL, THE TOTAL MINIMUM WEIGHT OF PLASTICIZER BEING APPROXIMATELY EQUAL TO THE TOTAL WEIGHT OF POLYMER.
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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) | 1968-09-27 | 1969-03-29 | 1969-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-27 | 1973-03-29 | 1973-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-27 | 1977-03-29 | 1977-09-28 | $7700.00 | Window Closed / Lapsed |