US3308223A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making molds for elastomeric articles having surface details
Assignee: National Latex Products Co
•
Filing: 1963-11-18
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Granted: 1967-03-07
•
Expires: 1983-11-18
Abstract
No abstract record available.
Inventors
- 👤 Carlos D Hoppes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:09
CPC Classifications
B; B29; B29D; B29D99/00; B29D99/0042; B29C; B29C33/00; B29C33/38; B29C33/3842; B29C33/3857; B29L; B29L2031/00; B29L2031/54; Y; Y10; Y10S; Y10S273/00; Y10S273/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
A METHOD OF MAKING A CAVITY MOLD, COMPRISING THE STEPS OF FORMING ON A MODEL ARTICLE, HAVING THREE-DIMENSIONAL MARKINGS THEREON, A HOLLOW ELASTOMERIC SHELL OF SUCH FIRM, RUBBER-LIKE RESILIENCY AS WILL RESIST MOLDING PRESSURE WITHOUT SUBSTANTIAL DEFORMATION OF SURFACE DETAILS TO BE FORMED BY SAID MARKINGS; REMOVING THE FORMED SHELL AS COMPLEMENTAL SEGMENTS THEREOF FROM THE MODEL ARTICLE WITH NEGATIVE IMPRESSIONS OF SAID MARKINGS ON THE INNER SURFACE PORTIONS OF THE SHELL SEGMENTS; AFFIXING THE
Claim 2
Independent Claim
75 words
A METHOD OF MAKING A CAVITY MOLD, COMPRISING THE STEPS OF FORMING ON A MODEL ARTICLE, HAVING THREE-DIMENSIONAL MARKINGS THEREON, A HOLLOW ELASTOMERIC SHELL OF SUCH FIRM, RUBBER-LIKE RESILIENCY AS WILL RESIST MOLDING PRESSURE WITHOUT SUBSTANTIAL DEFORMATION OF SURFACE DETAILS TO BE FORMED BY SAID MARKINGS; REMOVING THE FORMED SHELL AS COMPLEMENTAL SEGMENTS THEREOF FROM THE MODEL ARTICLE WITH NEGATIVE IMPRESSIONS OF SAID MARKINGS ON THE INNER SURFACE PORTIONS OF THE SHELL SEGMENTS; AFFIXING THE
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-03-06 | 1970-09-05 | 1971-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-06 | 1974-09-05 | 1975-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-06 | 1978-09-05 | 1979-03-07 | $7700.00 | Window Closed / Lapsed |