Patent US2751545A successfully refreshed from Google Patents.
US2834052A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making mold masters
Assignee: Sherwin Williams Co
•
Filing: 1954-01-14
•
Granted: 1958-05-13
•
Expires: 1974-01-14
Abstract
No abstract record available.
Inventors
- 👤 James V Hunn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:48
CPC Classifications
B; B22; B22C; B22C7/00; B22C7/02; B29; B29C; B29C33/00; B29C33/38; B29C33/3842; B29K; B29K2105/00; B29K2105/0058; B29K2105/0061; Y; Y10; Y10S; Y10S264/00; Y10S264/60; Y10S425/00; Y10S425/029
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
45 words
A PROCESS FOR MAKING MOLDS WHICH INCLUDES THE STEPS OF GELLING A LIQUID PLASTISOL TO FORM A SOLID BODY COOLING SAID GELLED PLASTISOL, SHAPING SAID GELLED PLASTIC BODY BY REMOVING MATERIAL THEREFROM TO FORM A DESIGN IN THE SURFACE THEREOF, AND THEN REHEATING SAID SHAPED
Claim 2
Dependent Claim
45 words
A PROCESS FOR MAKING MOLDS WHICH INCLUDES THE STEPS OF GELLING A LIQUID PLASTISOL TO FORM A SOLID BODY COOLING SAID GELLED PLASTISOL, SHAPING SAID GELLED PLASTIC BODY BY REMOVING MATERIAL THEREFROM TO FORM A DESIGN IN THE SURFACE THEREOF, AND THEN REHEATING SAID SHAPED
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) | 1961-05-12 | 1961-11-11 | 1962-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-12 | 1965-11-11 | 1966-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-12 | 1969-11-11 | 1970-05-13 | $7700.00 | Window Closed / Lapsed |