Patent US4759350A successfully refreshed from Google Patents.
Patent US3025207A successfully refreshed from Google Patents.
US3025207A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of continuously forming a reinforced plastic sheet material and apparatus therefor
Assignee: Individual
•
Filing: 1956-03-12
•
Granted: 1962-03-13
•
Expires: 1976-03-12
Abstract
No abstract record available.
Inventors
- 👤 Chetakian Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:51
CPC Classifications
B; B29; B29C; B29C70/00; B29C70/04; B29C70/06; B29C70/10; B29C70/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
A METHOD OF CONTINUOUSLY FORMING AT ATMOSPHERIC PRESSURE A REINFORCED POLYMERIZED RESIN SHEET OF ANY DESIRED WIDTH AND LENGTH, COMPRISING THE STEPS OF: CONTINUOUSLY DEPOSITING A FIRST LAYER OF POLYMERIZABLE LIQUID RESIN DIRECTLY UPON A REVOLVING ENDLESS BELT HAVING AN IMPERFORATE AND NON-PLANAR RESIN-RECEIVING SURFACE, SAID FIRST LAYER HAVING UPPER AND LOWER SURFACES: CONTINUOUSLY HEATING SAID RESIN WHILE IT IS EXPOSED TO THE ATMOSPHERE UNTIL IS ASSUMES A TACKY CONSISTENCY; CONTINUOUSLY DEPOSITING A PLURALITY OF REINFORCING FIBRES UPON SAID RESIN WHEN IT IS SUFFICIENTLY TACKY TO PREVENT SAID FIBRES FROM REACHING AND PROTUDING THROUGH SAID LOWER SURFACE; CONTINUOUSLY DEPOSITING A SECOND LAYER OF POLYMERIZABLE LIQUID RESIN UPON SAID REINFORCING FIBRES SO AS TO COMPLETELY ENVELOPE SAID FIBRES BETWEEN SAID FIRST AND SECOND LAYERS; CONTINUOULSY HEATING SAID LAYERS AND ENVELOPED FIBERS SO AS TO CAUSE COMPLETE POLYMERIZATION OF SAID LAYERS, THEREBY FORMING AN INTEGRAL SHEET; AND SEPARTING SAID INTEGRAL SHEET FROM SAID ENDLESS BELT.
Claim 2
Independent Claim
153 words
A METHOD OF CONTINUOUSLY FORMING AT ATMOSPHERIC PRESSURE A REINFORCED POLYMERIZED RESIN SHEET OF ANY DESIRED WIDTH AND LENGTH, COMPRISING THE STEPS OF: CONTINUOUSLY DEPOSITING A FIRST LAYER OF POLYMERIZABLE LIQUID RESIN DIRECTLY UPON A REVOLVING ENDLESS BELT HAVING AN IMPERFORATE AND NON-PLANAR RESIN-RECEIVING SURFACE, SAID FIRST LAYER HAVING UPPER AND LOWER SURFACES: CONTINUOUSLY HEATING SAID RESIN WHILE IT IS EXPOSED TO THE ATMOSPHERE UNTIL IS ASSUMES A TACKY CONSISTENCY; CONTINUOUSLY DEPOSITING A PLURALITY OF REINFORCING FIBRES UPON SAID RESIN WHEN IT IS SUFFICIENTLY TACKY TO PREVENT SAID FIBRES FROM REACHING AND PROTUDING THROUGH SAID LOWER SURFACE; CONTINUOUSLY DEPOSITING A SECOND LAYER OF POLYMERIZABLE LIQUID RESIN UPON SAID REINFORCING FIBRES SO AS TO COMPLETELY ENVELOPE SAID FIBRES BETWEEN SAID FIRST AND SECOND LAYERS; CONTINUOULSY HEATING SAID LAYERS AND ENVELOPED FIBERS SO AS TO CAUSE COMPLETE POLYMERIZATION OF SAID LAYERS, THEREBY FORMING AN INTEGRAL SHEET; AND SEPARTING SAID INTEGRAL SHEET FROM SAID ENDLESS BELT.
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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) | 1965-03-12 | 1965-09-11 | 1966-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-12 | 1969-09-11 | 1970-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-12 | 1973-09-11 | 1974-03-13 | $7700.00 | Window Closed / Lapsed |