US2804440A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Organopolysiloxane polishes
Assignee: General Electric Co
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Filing: 1955-01-31
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Granted: 1957-08-27
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Expires: 1975-01-31
Abstract
No abstract record available.
Inventors
- 👤 Donald V Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:04
CPC Classifications
C; C09; C09G; C09G1/00; C09G1/06; C09G1/14; C09G1/16
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
170 words
A POLISH COMPOSITION COMPRISING , BY WEIGHT, (1) FROM 20 TO 60 PARTS OF A LIQUID LINEAR METHYLPOLYSILOXANE HAVING A VISCOSITY OF FROM 50 TO 1,000 CENTIPOISES, (2) FROM 2.5 TO 20 PARTS OF A LIQUID LINEAR METHYLPOLYSILOXANE HAVING A VISCOSITY OF FROM 5,000 TO 100,000 CENTIPOISES THE VISCOSITIES OF (1) AND (2) BEING MEASURED AT ABOUTT 25*C. AND THE METHYLPOLYSILOXANES OF (1) AND (2) HAVING A METHYL-TO-SILICON RATIO IN EXCESS OF 2, THE METHYL GROUPS BEING ATTACHED TO SILICON BY SI-C LINKAGES, (3) FROM 2 TO 20 PARRS OF A METHYL PHENYLPOLYSILOXANE RESIN INCOMPATIBLE WITH THE AFOREMENTIONED TWO METHYLPOLYSILOXANE LIQUIDS, THE METHYL AND PHENYL GROUPS BEING ATTACHED DIRECTLY TO SILICON BY CARBON-SILICON LINKAGES AND THERE BEING PRESENT AN AVERAGE OF FROM 1.1 TO 1.8 TOTAL METHYL AND PHENYL GROUPS PER SILICON ATOM, (4) FROM 15 TO 45 PARTS OF A MICROCRYSTALLINE WAX, (5) UP TO 1,000 PARTS WATER, (6) FROM 25 TO 300 PARTS OF A FINELY DIVIDED ABRASIVE, AND (7) FROM 100 TO 900 PARTS OF HYDROCARBON SOLVENT.
References Cited (Backward Citations)
US2588366A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-08-26 | 1961-02-25 | 1961-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-26 | 1965-02-25 | 1965-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-26 | 1969-02-25 | 1969-08-27 | $7700.00 | Window Closed / Lapsed |