US2994110A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surfacing process for isocyanate foam and product
Assignee: Bayer Corp
•
Filing: 1957-05-10
•
Granted: 1961-08-01
•
Expires: 1977-05-10
Abstract
No abstract record available.
Inventors
- 👤 Edgar E Hardy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:56
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/34; C08J2375/00; C08J2375/04; Y; Y10; Y10S; Y10S521/00; Y10S521/918; Y10T; Y10T428/00; Y10T428/23; Y10T428/233; Y10T428/249921; Y10T428/249953; Y10T428/249987; Y10T428/249988; Y10T428/249989; Y10T428/31504; Y10T428/31551; Y10T428/31554
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
A METHOD OF SURFACING RODS, SLABS AND THE LIKE OF POLYURETHANE FOAM COMPRISING SIMULTANEOUSLY PRESSING AND HEATING A STRATUM OF POLYURETHANE FOAM WHILE IT IS IN CONTACT WITH THE FIRST SAID FOAM TO A TEMPERATURE BELOW THE DECOMPOSITION TEMPERATURE OF POLYURETHANE UNTIL THE STRATUM IS FUSED INTO A SKIN ON THE FIRST SAID FOAM.
Claim 2
Independent Claim
54 words
A METHOD OF SURFACING RODS, SLABS AND THE LIKE OF POLYURETHANE FOAM COMPRISING SIMULTANEOUSLY PRESSING AND HEATING A STRATUM OF POLYURETHANE FOAM WHILE IT IS IN CONTACT WITH THE FIRST SAID FOAM TO A TEMPERATURE BELOW THE DECOMPOSITION TEMPERATURE OF POLYURETHANE UNTIL THE STRATUM IS FUSED INTO A SKIN ON THE FIRST SAID FOAM.
References Cited (Backward Citations)
GB575125A
Cited
US2325668A
Cited
US2357513A
Cited
US2376653A
Cited
US2526311A
Cited
GB589759A
Cited
US2504208A
Cited
US2582228A
Cited
US2642920A
Cited
US2716778A
Cited
DE944285C
Cited
US2728698A
Cited
US2878153A
Cited
US2867222A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-31 | 1965-01-30 | 1965-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-31 | 1969-01-30 | 1969-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-31 | 1973-01-30 | 1973-08-01 | $7700.00 | Window Closed / Lapsed |