Patent US3192173A successfully refreshed from Google Patents.
US3192173A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Article of polyalkylene oxide, cellulose and talc
Assignee: Shell USA Inc
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Filing: 1961-07-25
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Granted: 1965-06-29
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Expires: 1981-07-25
Abstract
No abstract record available.
Inventors
- 👤 Merrall Granville Thorpe
- 👤 Caiger Donald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 02:54
CPC Classifications
C; C08; C08L; C08L71/00; C08L71/02; C08K; C08K3/00; C08K3/01; C08K3/013
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
47 words
AS AN ARTICLE OF MANUFACTURE, A SHEET OF A DRY COMPOSITION CONSISTING ESSENTIALLY OF FROM ABOUT 10 TO ABOUT 30 PERCENT BY WEIGHT OF POLYETHYLENE OXIDE OF MOLECULAR WEIGHT OF ABOUT 300,000, ABOUT 4 TO 12 PERCENT OF CELLULOSE AND ABOUT 58 TO 86 PERCENT OF TALC.
Claim 2
Dependent Claim
47 words
AS AN ARTICLE OF MANUFACTURE, A SHEET OF A DRY COMPOSITION CONSISTING ESSENTIALLY OF FROM ABOUT 10 TO ABOUT 30 PERCENT BY WEIGHT OF POLYETHYLENE OXIDE OF MOLECULAR WEIGHT OF ABOUT 300,000, ABOUT 4 TO 12 PERCENT OF CELLULOSE AND ABOUT 58 TO 86 PERCENT OF TALC.
Claim 3
Dependent Claim
64 words
AS AN ARTICLE OF MANUFACTURE, A SHEET OF A DRY COMPOSITION CONSISTING ESSENTIALLY OF FROM ABOUT 10 TO ABOUT 30 PERCENT BY WEIGHT OF A POLY(ALKYLENE OXIDE) OF A MOLECULAR WEIGHT OF AT LEAST 10,000 SELECTED FROM THE GROUP CONSISTING OF POLYETHYLENE OXIDE AND THE POLYMER OF 1,2 PROPYLENE OXIDE, ABOUT 4 TO 12 PERCENT CELLULOSE AND ABOUT 58 TO 86 PERCENT OF TALC.
Claim 4
Dependent Claim
64 words
AS AN ARTICLE OF MANUFACTURE, A SHEET OF A DRY COMPOSITION CONSISTING ESSENTIALLY OF FROM ABOUT 10 TO ABOUT 30 PERCENT BY WEIGHT OF A POLY(ALKYLENE OXIDE) OF A MOLECULAR WEIGHT OF AT LEAST 10,000 SELECTED FROM THE GROUP CONSISTING OF POLYETHYLENE OXIDE AND THE POLYMER OF 1,2 PROPYLENE OXIDE, ABOUT 4 TO 12 PERCENT CELLULOSE AND ABOUT 58 TO 86 PERCENT OF TALC.
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) | 1968-06-28 | 1968-12-28 | 1969-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-28 | 1972-12-28 | 1973-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-28 | 1976-12-28 | 1977-06-29 | $7700.00 | Window Closed / Lapsed |