US2877498A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the manufacture of hollow articles from resin impregnated cellulosic materials
Assignee: Individual
•
Filing: 1954-10-18
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Granted: 1959-03-17
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Expires: 1974-10-18
Abstract
No abstract record available.
Inventors
- 👤 Caspar C Schneider
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:43
CPC Classifications
B; B29; B29C; B29C51/00; B29C51/002; B29C51/08; B29C51/18; B29C51/20; B29C51/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
A PROCESS FOR MANUFACTURING RESIN IMPREGNATED MOLDED CELLULOSIC HOLLOW ARTICLES WHICH COMPRISES IMPREGNATING CELLULOSE PULP SUBSTANTIALLY FREE FROM RESINOUS MATERIALS WITH AN AQUEOUS DISPERGNATED OF A HEAT HARDENABLE SYNTHETIC RESIN, DRYING THE IMPREGNATED PULP TO THE EXTENT OF REDUCING THE WATER CONTENT OF THE IMPREGNATED PULP TO A FIGURE BETWEEN ABOUT 25% AND ABOUT 145% BASED ON THE WEIGHT OF THE AIR DRY PULP, DEPENDING ON THE NATURE OF THE PULP AND THE RESIN CONTENT, SAID WATER CONTENT BEING ONLY SUDDICENT TO RENDER SAID PULP MOLDING INTO THREE DIMENSIONAL HOLLOW ARTICLES, THEN MOLDING SAID DRIED IMPREGNATED PULP BY MEANS OF A DIE AND PLUNGER AT LEAST ONE OF WHICH IS HEATED INTO SUCH ARTICLES AND CURING SAID RESIN.
Claim 2
Dependent Claim
118 words
A PROCESS FOR MANUFACTURING RESIN IMPREGNATED MOLDED CELLULOSIC HOLLOW ARTICLES WHICH COMPRISES IMPREGNATING CELLULOSE PULP SUBSTANTIALLY FREE FROM RESINOUS MATERIALS WITH AN AQUEOUS DISPERGNATED OF A HEAT HARDENABLE SYNTHETIC RESIN, DRYING THE IMPREGNATED PULP TO THE EXTENT OF REDUCING THE WATER CONTENT OF THE IMPREGNATED PULP TO A FIGURE BETWEEN ABOUT 25% AND ABOUT 145% BASED ON THE WEIGHT OF THE AIR DRY PULP, DEPENDING ON THE NATURE OF THE PULP AND THE RESIN CONTENT, SAID WATER CONTENT BEING ONLY SUDDICENT TO RENDER SAID PULP MOLDING INTO THREE DIMENSIONAL HOLLOW ARTICLES, THEN MOLDING SAID DRIED IMPREGNATED PULP BY MEANS OF A DIE AND PLUNGER AT LEAST ONE OF WHICH IS HEATED INTO SUCH ARTICLES AND CURING SAID RESIN.
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) | 1962-03-16 | 1962-09-15 | 1963-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-16 | 1966-09-15 | 1967-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-16 | 1970-09-15 | 1971-03-17 | $7700.00 | Window Closed / Lapsed |