US3239371A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Paper products surface sized with polyethylene and method of making the same
Assignee: Gulf Oil Corp
•
Filing: 1962-05-28
•
Granted: 1966-03-08
•
Expires: 1982-05-28
Abstract
No abstract record available.
Inventors
- 👤 Robert C Whitney
- 👤 Thadeus J Brudniak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 00:31
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/20; D21H17/33; D21H17/34; D21H17/35; G; G03; G03G; G03G7/00; G03G7/0006; G03G7/002; G03G7/0026; G03G7/004; Y; Y10; Y10T; Y10T428/00; Y10T428/25; Y10T428/254; Y10T428/31504; Y10T428/31855; Y10T428/3188; Y10T428/31895; Y10T428/31899; Y10T428/31902; Y10T428/31971; Y10T428/31975; Y10T428/31978; Y10T428/31982
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
47 words
THE METHOD OF SURFCE SIZING PAPER PRODUCTS WHICH COMPRISES CONTACTING A PAPER SURFACE WITH AN AQAUEOUS FLUID COMPRISING AN AQUEOUS DISPERSION OF STARCH IN ADMIXTURE WITH A STABLE LATEX COMPRISING PARTICLES OF POLYETHYLENE, AND SAID PARTICLES HAVING AN AVERAGE SIZE BETWEEN ABOUT 0.02 TO ABOUT 0.5 MICRON.
Claim 2
Independent Claim
47 words
THE METHOD OF SURFCE SIZING PAPER PRODUCTS WHICH COMPRISES CONTACTING A PAPER SURFACE WITH AN AQAUEOUS FLUID COMPRISING AN AQUEOUS DISPERSION OF STARCH IN ADMIXTURE WITH A STABLE LATEX COMPRISING PARTICLES OF POLYETHYLENE, AND SAID PARTICLES HAVING AN AVERAGE SIZE BETWEEN ABOUT 0.02 TO ABOUT 0.5 MICRON.
References Cited (Backward Citations)
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Cited
US2668156A
Cited
US2597741A
Cited
US2739058A
Cited
US2924538A
Cited
US3095391A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-07 | 1969-09-06 | 1970-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-07 | 1973-09-06 | 1974-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-07 | 1977-09-06 | 1978-03-08 | $7700.00 | Window Closed / Lapsed |