US3210240A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sizing paper with a foamed starch
Assignee: Cip Inc
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Filing: 1963-07-16
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Granted: 1965-10-05
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Expires: 1983-07-16
Abstract
No abstract record available.
Inventors
- 👤 Douglas E Read
- 👤 William B Cranford
- 👤 Anthony J Petricola
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:56
CPC Classifications
D; D21; D21H; D21H21/00; D21H21/50; D21H21/56; D21H17/00; D21H17/20; D21H17/21; D21H17/24; D21H17/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
IN THE MANUFACTURE OF A PAPER SELECTED FROM THE GROUP CONSISTING OF NEWSPRINT, NEWSROTO, NOVEL NEWS, DIRECTORY AND CATALOG PAPERS, A PROCESS OF BONDING TWO SURFACE FIBERS OF THE PAPER TO THE BODY THEREOF COMPRISING FOAMING STARCH DISPERSED IN WATER BY MEANS OF COMPRESSED AIR AND WITH THE AID OF A WETTING AGENT, DRAINING THE STARCH FOAM TO THE PAPER, AT A RATE EQUIVALENT TO ABOUT 10 TO 20 LBS. PER TON OF AIR DRIED PAPER.
Claim 2
Dependent Claim
76 words
IN THE MANUFACTURE OF A PAPER SELECTED FROM THE GROUP CONSISTING OF NEWSPRINT, NEWSROTO, NOVEL NEWS, DIRECTORY AND CATALOG PAPERS, A PROCESS OF BONDING TWO SURFACE FIBERS OF THE PAPER TO THE BODY THEREOF COMPRISING FOAMING STARCH DISPERSED IN WATER BY MEANS OF COMPRESSED AIR AND WITH THE AID OF A WETTING AGENT, DRAINING THE STARCH FOAM TO THE PAPER, AT A RATE EQUIVALENT TO ABOUT 10 TO 20 LBS. PER TON OF AIR DRIED PAPER.
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) | 1968-10-04 | 1969-04-05 | 1969-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-04 | 1973-04-05 | 1973-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-04 | 1977-04-05 | 1977-10-05 | $7700.00 | Window Closed / Lapsed |