Patent US3334557A successfully refreshed from Google Patents.
US3334557A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyurethane concrete slab sealer
Assignee: Phelan-Faust Paint Manufacturing Co
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Filing: 1965-04-29
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Granted: 1967-08-08
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Expires: 1985-04-29
Abstract
No abstract record available.
Inventors
- 👤 James B Fitzgibbon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:40
CPC Classifications
E; E01; E01C; E01C11/00; E01C11/02; E01C11/04; E01C11/10; E01C11/103; Y; Y10; Y10S; Y10S52/00; Y10S52/07; Y10S521/00; Y10S521/918; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31554; Y10T428/31598
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
A SLAB SEALER FOR CONCRETE SLABS SPACED APART TO PROVIDE A CRACK, SAID SLAB SEALER BEING FORMED IN SITU IN SAID CRACK AND BEING COMPRISED ESSENTIALLY OF A RIGID POLYURETHANE OF RELATIVELY LOW DENSITY BONDED TO THE SIDES OF SAID CRACK AND FILLING THE BOTTOM OF THE CRACK AND AN ELASTOMERIC POLYURETHANE OF HIGHER DENSITY THAN SAID RIGID POLYURETHANE BONDED TO THE SIDES OF SAID CRACK AND TO SAID RIGID POLYURETHANE AND SUBSTANTIALLY FILLING THE TOP OF THE CRACK TO SEAL THE SAME, THE DENSITY OF THE RIGID POLYURETHANE FOAM BEING OF ABOUT 2 TO 10 POUNDS PER CUBIC FOOT AND THE DENSITY OF THE ELASTOMERIC POLYURETHANE BEING ABOUT 10 TO 30 POUNDS PER CUBIC FOOT.
Claim 2
Dependent Claim
116 words
A SLAB SEALER FOR CONCRETE SLABS SPACED APART TO PROVIDE A CRACK, SAID SLAB SEALER BEING FORMED IN SITU IN SAID CRACK AND BEING COMPRISED ESSENTIALLY OF A RIGID POLYURETHANE OF RELATIVELY LOW DENSITY BONDED TO THE SIDES OF SAID CRACK AND FILLING THE BOTTOM OF THE CRACK AND AN ELASTOMERIC POLYURETHANE OF HIGHER DENSITY THAN SAID RIGID POLYURETHANE BONDED TO THE SIDES OF SAID CRACK AND TO SAID RIGID POLYURETHANE AND SUBSTANTIALLY FILLING THE TOP OF THE CRACK TO SEAL THE SAME, THE DENSITY OF THE RIGID POLYURETHANE FOAM BEING OF ABOUT 2 TO 10 POUNDS PER CUBIC FOOT AND THE DENSITY OF THE ELASTOMERIC POLYURETHANE BEING ABOUT 10 TO 30 POUNDS PER CUBIC FOOT.
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) | 1970-08-07 | 1971-02-06 | 1971-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-07 | 1975-02-06 | 1975-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-07 | 1979-02-06 | 1979-08-08 | $7700.00 | Window Closed / Lapsed |