US3242239A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filling structural cavities
Assignee: Freeman Chemical Corp
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Filing: 1961-08-16
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Granted: 1966-03-22
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Expires: 1981-08-16
Abstract
No abstract record available.
Inventors
- 👤 Kenneth A Schafer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:42
CPC Classifications
B; B29; B29C; B29C37/00; B29C37/0078; B29C37/0082; B29C37/0085; B29C70/00; B29C70/68; B29C70/74; B29C70/745; B29C73/00; B29C73/04; H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H02; H02K; H02K3/00; H02K3/46; H02K3/48; H02K3/487; B29K; B29K2075/00; B29K2105/00; B29K2105/04; B29K2105/045
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
THE METHOD FOR FILLING A STRUCTURAL DENT COMPRISING POSITIONING A SHEET OF FOAMED POLYURETHANE OVER THE SAID DENT, SAID POLYURETHANE HAVING A NORMAL UNCOMPRESSED THICKNESS AT LEAST AS THICK AS THE SAID DENT, SAID FOAMED POLYURETHANE SHEET HAVING OPEN, CONNECTED CELLS AND BEING IMPREGNATED WITH A THERMOSETTING RESINOUS COMPOSITION, COMPRESSING THE SAID SHEET OF FOAMED POLYURETHANE INTO THE SAID DENT BY MEANS OF A MOLDING ELEMENT CORRESPONDING IN CONFIGURATION TO AN UNDENTED STRUCTURE, AND CURING THE SAID THERMOSETTING RESINOUS COMPOSITION WHILE MAINTAINING THE SAID FOAMED POLYURETHANE UNDER COMPRESSION.
Claim 2
Independent Claim
88 words
THE METHOD FOR FILLING A STRUCTURAL DENT COMPRISING POSITIONING A SHEET OF FOAMED POLYURETHANE OVER THE SAID DENT, SAID POLYURETHANE HAVING A NORMAL UNCOMPRESSED THICKNESS AT LEAST AS THICK AS THE SAID DENT, SAID FOAMED POLYURETHANE SHEET HAVING OPEN, CONNECTED CELLS AND BEING IMPREGNATED WITH A THERMOSETTING RESINOUS COMPOSITION, COMPRESSING THE SAID SHEET OF FOAMED POLYURETHANE INTO THE SAID DENT BY MEANS OF A MOLDING ELEMENT CORRESPONDING IN CONFIGURATION TO AN UNDENTED STRUCTURE, AND CURING THE SAID THERMOSETTING RESINOUS COMPOSITION WHILE MAINTAINING THE SAID FOAMED POLYURETHANE UNDER COMPRESSION.
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) | 1969-03-21 | 1969-09-20 | 1970-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-21 | 1973-09-20 | 1974-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-21 | 1977-09-20 | 1978-03-22 | $7700.00 | Window Closed / Lapsed |