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US2848753A
Expired / Lapsed
US
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Production of polymeric alpha-chloroacrylate sheets
Assignee: GAF Chemicals Corp
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Filing: 1953-06-01
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Granted: 1958-08-26
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Expires: 1973-06-01
Abstract
No abstract record available.
Inventors
- 👤 Harry D Anspon
- 👤 Frank E Pschorr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:28
CPC Classifications
B; B32; B32B; B32B17/00; B32B17/06; B32B17/10; B32B17/10005; B32B17/10807; B32B17/10899; B32B17/10908; B32B17/10917; B32B17/1055; B32B17/10743
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
159 words
IN A METHOD OF PRODUCING A POLYMERIC A-CHLOROACRYLATE SHEET, THE STEPS COMPRISING SUPPORTING IN INCLINED POSITION ON A FLAT RIGID MEMBER A CASTING CELL COMPOSED OF UPPER AND LOWER FLAT CELL WALLS EDGE-SEALED AND PROVIDED WITH SPACERS AROUND THE PERIPHERY THEREOF, SAID UPPER CELL WALL BEING RELATIVELY THIN AND FLEXIBLE FILLING THE CELL THROUGH AN OPENING IN THE EDGE SEAL AT THE UPPERMOST PORTION THEREOF WITH AN AMOUNT OF LIQUID A-CHLOROACRYLIC ACID ESTER MONOMER SUFFICIENT TO COMPLETELY FILL THE CASTING CELL WHEN THE CELL WALLS ARE IN PARALLEL RELATIONSHIP, FORCING A SECOND FLAT RIGID MEMBER HAVING APPROXIMATELY THE SAME SURFACE DIMENSIONS AS THE CELL WALLS ON THE UPPER CELL WALL SO THAT SAID UPPER CELL WALL IS SUBSTANTIALLY IN PARALLEL RELATIONSHIP WITH SAID LOWER CELL WALL, AND SEALING THE OPENING AT THE UPPERMOST PORTION OF THE CELL WHEN THE LEVEL OF THE MONOMER IN THE CELL IS IMMEDIATELY ADJACENT THERETO, ALL WHILE MAINTAINING SAID CASTING CELL IN INCLINED POSITION.
Claim 2
Dependent Claim
159 words
IN A METHOD OF PRODUCING A POLYMERIC A-CHLOROACRYLATE SHEET, THE STEPS COMPRISING SUPPORTING IN INCLINED POSITION ON A FLAT RIGID MEMBER A CASTING CELL COMPOSED OF UPPER AND LOWER FLAT CELL WALLS EDGE-SEALED AND PROVIDED WITH SPACERS AROUND THE PERIPHERY THEREOF, SAID UPPER CELL WALL BEING RELATIVELY THIN AND FLEXIBLE FILLING THE CELL THROUGH AN OPENING IN THE EDGE SEAL AT THE UPPERMOST PORTION THEREOF WITH AN AMOUNT OF LIQUID A-CHLOROACRYLIC ACID ESTER MONOMER SUFFICIENT TO COMPLETELY FILL THE CASTING CELL WHEN THE CELL WALLS ARE IN PARALLEL RELATIONSHIP, FORCING A SECOND FLAT RIGID MEMBER HAVING APPROXIMATELY THE SAME SURFACE DIMENSIONS AS THE CELL WALLS ON THE UPPER CELL WALL SO THAT SAID UPPER CELL WALL IS SUBSTANTIALLY IN PARALLEL RELATIONSHIP WITH SAID LOWER CELL WALL, AND SEALING THE OPENING AT THE UPPERMOST PORTION OF THE CELL WHEN THE LEVEL OF THE MONOMER IN THE CELL IS IMMEDIATELY ADJACENT THERETO, ALL WHILE MAINTAINING SAID CASTING CELL IN INCLINED POSITION.
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) | 1961-08-25 | 1962-02-24 | 1962-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-25 | 1966-02-24 | 1966-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-25 | 1970-02-24 | 1970-08-26 | $7700.00 | Window Closed / Lapsed |