US3300557A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacturing rubber sheets provided with a relief pattern
Assignee: Valentinigomma SpA
•
Filing: 1964-01-03
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Granted: 1967-01-24
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Expires: 1984-01-03
Abstract
No abstract record available.
Inventors
- 👤 Valentini Luciano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:55
CPC Classifications
B; B26; B26F; B26F1/00; B26F1/38; B26F1/3866; A; A47; A47G; A47G27/00; A47G27/02; A47G27/0212; A47G27/0225; B26F1/40; B29; B29C; B29C43/00; B29C43/02; B29C43/021; B29C43/18; B60; B60N; B60N3/00; B60N3/04; B60N3/048; B29C2043/023; B29K; B29K2021/00; B29K2705/00; B29L; B29L2031/00; B29L2031/30; B29L2031/3005; B29L2031/3017
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
METHOD OF MANUFACTURING A SHEET OF A HEAT-CURABLE MATERIAL HAVING A RELIEF PATTERN ON ONE OF ITS FACES, COMPRISING SANDWICHING A RELATIVELY RIGID APERTURED STENCIL PLATE BETWEEN A FIRST LAYER OF HEAT-CURABLE MATERIAL AND A SECOND LAYER OF HEAT-CURABLE MATERIAL DIFFERING FROM THE FIRST MENTIONED MATERIAL, IMPRESSING SAID SECOND LAYER INTO THE APERTURES IN THE STENCIL PLATE WHILE APPLYING A BACKING PRESSURE TO THE FIRST LAYER THEREBY TO PUNCH-OUT A PATCH FROM SAID SECOND LAYER INTO EACH OF SAID APERTURES AND INTO CONTACT WITH THE MATERIAL OF SAID FIRST LAYER IN SAID APERTURES, AND APPLYING CURING HEAT TO SAID PATCHES AND FIRST LAYER TO BOND THEM TOGETHER.
Claim 2
Dependent Claim
107 words
METHOD OF MANUFACTURING A SHEET OF A HEAT-CURABLE MATERIAL HAVING A RELIEF PATTERN ON ONE OF ITS FACES, COMPRISING SANDWICHING A RELATIVELY RIGID APERTURED STENCIL PLATE BETWEEN A FIRST LAYER OF HEAT-CURABLE MATERIAL AND A SECOND LAYER OF HEAT-CURABLE MATERIAL DIFFERING FROM THE FIRST MENTIONED MATERIAL, IMPRESSING SAID SECOND LAYER INTO THE APERTURES IN THE STENCIL PLATE WHILE APPLYING A BACKING PRESSURE TO THE FIRST LAYER THEREBY TO PUNCH-OUT A PATCH FROM SAID SECOND LAYER INTO EACH OF SAID APERTURES AND INTO CONTACT WITH THE MATERIAL OF SAID FIRST LAYER IN SAID APERTURES, AND APPLYING CURING HEAT TO SAID PATCHES AND FIRST LAYER TO BOND THEM TOGETHER.
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) | 1970-01-23 | 1970-07-25 | 1971-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-23 | 1974-07-25 | 1975-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-23 | 1978-07-25 | 1979-01-24 | $7700.00 | Window Closed / Lapsed |