Patent US3207646A successfully refreshed from Google Patents.
US3207646A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of altering the surface structure of webs of foam plastic and of uniting a support web to the treated web
Assignee: Agricola Reg Trust
•
Filing: 1962-12-17
•
Granted: 1965-09-21
•
Expires: 1982-12-17
Abstract
No abstract record available.
Inventors
- 👤 Hacklander Karl Hermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:36
CPC Classifications
B; B29; B29C; B29C66/00; B29C66/40; B29C66/41; B29C66/45; B29C44/00; B29C44/34; B29C44/56; B29C65/00; B29C65/02; B29C65/18; B29C65/20; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/70; B29C66/72; B29C66/727; B29C66/80; B29C66/83; B29C66/834; B29C66/8341; B29C66/83411; B29C66/83413; C; C08; C08J; C08J9/00; C08J9/36; B29C66/71; B29K; B29K2105/00; B29K2105/04; B29L; B29L2009/00; C08J2375/00; C08J2375/04
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
99 words
A METHOD OF PRODUCING A VELVET LIKE NON-SLIP SURFACE ON MATURE EXPANDED SHEET POLYURETHANE, SAID METHOD COMPRISING THE STEPS OF MOVING THE MATERIAL BEFORE A STREAM OF HOT AIR DIRECTED OBLIQUELY UPON THE SURFACE OF THE MATERIAL TO BE TREATED, THE TEMPERATURE OF THE AIR AND THE SPEED OF MOTION OF THE MATERIAL BEING SUCH AS TO RAISE THE TEMPERATURE OF THE MATERIAL ON THE SAID SURFACE SUFFICIENT TO RENDER PLASTIC THE WALLS OF THE PORES OF THE MATERIAL WITHOUT MELTING THE MATERIAL, OR RENDERING IT TACKY, AND IMMEDIATELY THEREAFTER COLD ROLLING THE MATERIAL IN A CALENDER ROLL GAP.
Claim 2
Independent Claim
99 words
A METHOD OF PRODUCING A VELVET LIKE NON-SLIP SURFACE ON MATURE EXPANDED SHEET POLYURETHANE, SAID METHOD COMPRISING THE STEPS OF MOVING THE MATERIAL BEFORE A STREAM OF HOT AIR DIRECTED OBLIQUELY UPON THE SURFACE OF THE MATERIAL TO BE TREATED, THE TEMPERATURE OF THE AIR AND THE SPEED OF MOTION OF THE MATERIAL BEING SUCH AS TO RAISE THE TEMPERATURE OF THE MATERIAL ON THE SAID SURFACE SUFFICIENT TO RENDER PLASTIC THE WALLS OF THE PORES OF THE MATERIAL WITHOUT MELTING THE MATERIAL, OR RENDERING IT TACKY, AND IMMEDIATELY THEREAFTER COLD ROLLING THE MATERIAL IN A CALENDER ROLL GAP.
Claim 3
Dependent Claim
40 words
A METHOD OF PRODUCING A VELVET LIKE NON-SLIP SURFACE ON ONE SIDE OF MATURE EXPANDED SHEET OF POLYURETHANE, AS CLAIMED IN CLAIM 3, FURTHER COMPRISING THE STEP OF SIMULATEOUSLY LAMINATING A SUPPORT WEB ON THE OTHER SIDE OF THE MATERIAL.
References Cited (Backward Citations)
CA599493A
Cited
US2346201A
Cited
US2629899A
Cited
US2678679A
Cited
US2786233A
Cited
US2867222A
Cited
US2960425A
Cited
US3104192A
Cited
US2861022A
Cited
US2957793A
Cited
US3075868A
Cited
US2893877A
Cited
US3072961A
Cited
US3061885A
Cited
US3112524A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-20 | 1969-03-22 | 1969-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-20 | 1973-03-22 | 1973-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-20 | 1977-03-22 | 1977-09-21 | $7700.00 | Window Closed / Lapsed |