US3067470A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for producing a pulp molding die
Assignee: Diamond National Corp
•
Filing: 1960-05-06
•
Granted: 1962-12-11
•
Expires: 1980-05-06
Abstract
No abstract record available.
Inventors
- 👤 Wendell H Stickney
- 👤 Richard F Reifers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 17:31
CPC Classifications
D; D21; D21J; D21J7/00; Y; Y10; Y10S; Y10S425/00; Y10S425/029; Y10S425/119
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
A METHOD OF MAKING A POROUS PULP MOLDING DIE HAVING AN EXTERIOR OPEN FACED, CONTOURED MOLDING SURFACE PROVIDED WITH A PERIPHERAL PORTION WHICH COMPRISES PREPARING A WINDOW OPENING EXTENDING THROUGH A FLAT METAL PLATE, SAID OPENING CONFORMING TO THE SHAPE OF THE PERIPHERAL PORTION OF THE DESIRED MOLDING SURFACE, ATTACHING A REINFORCING GRID ARRANGEMENT BELOW THE WINDOW OPENING OF SAID METAL, PREPARING A MALE MASTER PATTERN MOLD CONFORMING TO THE CONTOURS OF THE DESIRED MOLDING SURFACE, PLACING SAID METAL PLATE IN INVERTED POSITION, WITH THE GRID ARRANGEMENT EXTENDING UPWARDLY OVER SAID MALE MASTER PATTERN SO THAT THE CONTOURS THEREON ARE LOCATED OVER SAID WINDOW OPENING,POURING PHENOLIC RESIN COATED SPHERICAL BODIES ONTO SAID MALE MASTER PATTERN TO A THICKNESS COV-
Claim 2
Independent Claim
119 words
A METHOD OF MAKING A POROUS PULP MOLDING DIE HAVING AN EXTERIOR OPEN FACED, CONTOURED MOLDING SURFACE PROVIDED WITH A PERIPHERAL PORTION WHICH COMPRISES PREPARING A WINDOW OPENING EXTENDING THROUGH A FLAT METAL PLATE, SAID OPENING CONFORMING TO THE SHAPE OF THE PERIPHERAL PORTION OF THE DESIRED MOLDING SURFACE, ATTACHING A REINFORCING GRID ARRANGEMENT BELOW THE WINDOW OPENING OF SAID METAL, PREPARING A MALE MASTER PATTERN MOLD CONFORMING TO THE CONTOURS OF THE DESIRED MOLDING SURFACE, PLACING SAID METAL PLATE IN INVERTED POSITION, WITH THE GRID ARRANGEMENT EXTENDING UPWARDLY OVER SAID MALE MASTER PATTERN SO THAT THE CONTOURS THEREON ARE LOCATED OVER SAID WINDOW OPENING,POURING PHENOLIC RESIN COATED SPHERICAL BODIES ONTO SAID MALE MASTER PATTERN TO A THICKNESS COV-
References Cited (Backward Citations)
US2064435A
Cited
US2359201A
Cited
US2460242A
Cited
US2632922A
Cited
US2806509A
Cited
US3001582A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-10 | 1966-06-11 | 1966-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-10 | 1970-06-11 | 1970-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-10 | 1974-06-11 | 1974-12-11 | $7700.00 | Window Closed / Lapsed |