Patent US3257252A successfully refreshed from Google Patents.
US3257252A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making a decorative surface covering
Assignee: Congoleum Industries Inc
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Filing: 1960-05-03
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Granted: 1966-06-21
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Expires: 1980-05-03
Abstract
No abstract record available.
Inventors
- 👤 Donald K Keel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:34
CPC Classifications
B; B32; B32B; B32B5/00; B32B5/18; B32B5/20; B32B27/00; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1007; Y10T156/1023; Y10T428/00; Y10T428/24; Y10T428/24479; Y10T428/24496; Y10T428/24504; Y10T428/24521; Y10T428/24537; Y10T428/24612; Y10T428/249921; Y10T428/249953; Y10T428/249987; Y10T428/249991; Y10T428/249992
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
155 words
IN A METHOD OF PRODUCING A DECORATIVE SURFACE COVERING HAVING A CELLULAR LAYER WHICH COMPRISES COMPLETELY COVERING ONE SURFACE OF A FLEXIBLE SHEET HAVING ON SUCH SURFACE A PLURALITY OF AREAS DEPRESSED BELOW SAID SURFACE WITH A SMOOTH LAYER OF RESINOUS COMPOSITION CONTAINING A FOAMING AGENT, HEATING SAID LAYER TO FUSE SAID COMPOSITION AND DECOMPOSE SAID FOAMING AGENT TO EXPAND SAID RESINOUS COMPOSITION LAYER TO FORM SAID CELLULAR LAYER SURFACE COVERING HAVING A PLURALITY OF RAISED PORTIONS OVERLAYING AND COMFORMING IN CHARACTER AND SPACING TO SAID DEPRESSED AREAS IN SAID ONE SURFACE AND THEREAFTER COOLING THE EXPANDED LAYER, THE IMPROVEMENT WHICH COMPRISES HEATING SAID SMOOTHE LAYER OF RESINOUS COMPOSITION TO GEL SAID COMPOSITION WITHOUT DECOMPOSING SAID FOAMING AGENT, LAMINATING A FILM OF RESINOUS COMPOSITION OF AT LEAST 0.002 INCH IN THICKNESS TO THE UPPER SURFACE OF SAID GELLED LAYER AND THEN HEATING THE COMPOSITE SHEET TO DECOMPOSE THE FOAMING AGENT CONTAINED IN SAID GELLED LAYER.
Claim 2
Dependent Claim
155 words
IN A METHOD OF PRODUCING A DECORATIVE SURFACE COVERING HAVING A CELLULAR LAYER WHICH COMPRISES COMPLETELY COVERING ONE SURFACE OF A FLEXIBLE SHEET HAVING ON SUCH SURFACE A PLURALITY OF AREAS DEPRESSED BELOW SAID SURFACE WITH A SMOOTH LAYER OF RESINOUS COMPOSITION CONTAINING A FOAMING AGENT, HEATING SAID LAYER TO FUSE SAID COMPOSITION AND DECOMPOSE SAID FOAMING AGENT TO EXPAND SAID RESINOUS COMPOSITION LAYER TO FORM SAID CELLULAR LAYER SURFACE COVERING HAVING A PLURALITY OF RAISED PORTIONS OVERLAYING AND COMFORMING IN CHARACTER AND SPACING TO SAID DEPRESSED AREAS IN SAID ONE SURFACE AND THEREAFTER COOLING THE EXPANDED LAYER, THE IMPROVEMENT WHICH COMPRISES HEATING SAID SMOOTHE LAYER OF RESINOUS COMPOSITION TO GEL SAID COMPOSITION WITHOUT DECOMPOSING SAID FOAMING AGENT, LAMINATING A FILM OF RESINOUS COMPOSITION OF AT LEAST 0.002 INCH IN THICKNESS TO THE UPPER SURFACE OF SAID GELLED LAYER AND THEN HEATING THE COMPOSITE SHEET TO DECOMPOSE THE FOAMING AGENT CONTAINED IN SAID GELLED LAYER.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-20 | 1969-12-20 | 1970-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-20 | 1973-12-20 | 1974-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-20 | 1977-12-20 | 1978-06-21 | $7700.00 | Window Closed / Lapsed |