Patent US3293114A successfully refreshed from Google Patents.
US3293114A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming paper containing gaseous filled spheres of thermoplastic resins and paper thereof
Assignee: PIERCE & STEVENS CHEMICAL Corp
•
Filing: 1964-04-03
•
Granted: 1966-12-20
•
Expires: 1984-04-03
Abstract
No abstract record available.
Inventors
- 👤 Duane L Kenaga
- 👤 Ralph M Gooch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:48
CPC Classifications
D; D21; D21H; D21H21/00; D21H21/50; D21H21/52; D21H21/54; D21H17/00; D21H17/20; D21H17/33; D21H17/34; D21H17/37
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
A PAPER COMPRISING PAPER MAKING FIBERS HAVING INCORPORATED THEREIN A PLURALITY OF SYNTHETIC RESINOUS THERMOPLASTIC PARTICLES, EACH OF THE SYNTHETIC RESINOUS PARTICLES HAVING A GENERALLY SPHERICAL SHAPE AND DEFINING A GENERALLY SPHERICAL GASEOUS SPACE THEREIN, THE SYNTHETIC RESINOUS PARTICLES BEING PRESENT IN A PROPORTION FROM ABOUT 0.5 TO ABOUT 60 PERCENT BY WEIGHT OF THE WEIGHT OF THE PAPER MAKING FIBERS IN THE PAPER AND EACH OF THE RESINOUS PARTICLES HAVING A DIAMETER OF FROM ABOUT 0.5 TO ABOUT 200 MICRONS.
Claim 2
Dependent Claim
81 words
A PAPER COMPRISING PAPER MAKING FIBERS HAVING INCORPORATED THEREIN A PLURALITY OF SYNTHETIC RESINOUS THERMOPLASTIC PARTICLES, EACH OF THE SYNTHETIC RESINOUS PARTICLES HAVING A GENERALLY SPHERICAL SHAPE AND DEFINING A GENERALLY SPHERICAL GASEOUS SPACE THEREIN, THE SYNTHETIC RESINOUS PARTICLES BEING PRESENT IN A PROPORTION FROM ABOUT 0.5 TO ABOUT 60 PERCENT BY WEIGHT OF THE WEIGHT OF THE PAPER MAKING FIBERS IN THE PAPER AND EACH OF THE RESINOUS PARTICLES HAVING A DIAMETER OF FROM ABOUT 0.5 TO ABOUT 200 MICRONS.
References Cited (Backward Citations)
BE497154A
Cited
US2972554A
Cited
US3037903A
Cited
US3067482A
Cited
US3137631A
Cited
US3210239A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-19 | 1970-06-20 | 1970-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-19 | 1974-06-20 | 1974-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-19 | 1978-06-20 | 1978-12-20 | $7700.00 | Window Closed / Lapsed |