Patent US5277195A successfully refreshed from Google Patents.
US2696151A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of abrasively buffing a surface of a paper web
Assignee: Warren SD Co
•
Filing: 1949-12-12
•
Granted: 1954-12-07
•
Expires: 1969-12-12
Abstract
No abstract record available.
Inventors
- 👤 Ellis Robert Stewart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:41
CPC Classifications
D; D21; D21H; D21H19/00; D21H19/36; D21H19/44; D21H19/62
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
PROCESS OF ABRASIVELY BUFFING A SURFACE OF A PAPER WEB, WHICH COMPRISES CONTINUOUSLY ADVANCING A PAPER WEB, CONTACTING A SURFACE OF SAID MOVING WEB WITH THE SURFACE OF A RESILIENT BUFFING ROLL ROTATING AT A SURFACE SPEED DIFFERENT FROM THAT OF THE PAPER TRAVEL, AND CONTINUOUSLY APPLYING TO THE SURFACE OF SAID ROTATING RESILIENT BUFFING ROLL A METERED QUANTITY OF AN AQUEOUS SLURRY THE SOLIDS CONTENT OF WHICH CONSISTS ESSENTIALLY OF FROM 33 TO 95% BY WEIGHT OF ABRASIVE POWDER AND FROM 67 AOT 5% BY WEIGHT OF WATER-SOLUBLE, NORMALLY SOLID, POLYETHYLENE GLYCOL HAVING A MOLECULAR WEIGHT OF FROM ABOUT 1000 TO ABOUT 6000.
Claim 2
Dependent Claim
104 words
PROCESS OF ABRASIVELY BUFFING A SURFACE OF A PAPER WEB, WHICH COMPRISES CONTINUOUSLY ADVANCING A PAPER WEB, CONTACTING A SURFACE OF SAID MOVING WEB WITH THE SURFACE OF A RESILIENT BUFFING ROLL ROTATING AT A SURFACE SPEED DIFFERENT FROM THAT OF THE PAPER TRAVEL, AND CONTINUOUSLY APPLYING TO THE SURFACE OF SAID ROTATING RESILIENT BUFFING ROLL A METERED QUANTITY OF AN AQUEOUS SLURRY THE SOLIDS CONTENT OF WHICH CONSISTS ESSENTIALLY OF FROM 33 TO 95% BY WEIGHT OF ABRASIVE POWDER AND FROM 67 AOT 5% BY WEIGHT OF WATER-SOLUBLE, NORMALLY SOLID, POLYETHYLENE GLYCOL HAVING A MOLECULAR WEIGHT OF FROM ABOUT 1000 TO ABOUT 6000.
References Cited (Backward Citations)
US2436128A
Cited
US1821209A
Cited
US1862656A
Cited
US2016892A
Cited
US2006162A
Cited
US2058961A
Cited
GB542492A
Cited
US2349704A
Cited
US2488891A
Cited
US2482667A
Cited
US2501145A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-12-06 | 1958-06-07 | 1958-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-06 | 1962-06-07 | 1962-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-06 | 1966-06-07 | 1966-12-07 | $7700.00 | Window Closed / Lapsed |