US3585162A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyurethane recreational surfaces having improved tear strength
Assignee: LAYKOLD Corp
•
Filing: 1970-01-07
•
Granted: 1971-06-15
•
Expires: 1990-01-07
Abstract
Abstract RESILIENT PAVING MATERIALS COMPRISING CROSS LINKED, ORGANIC-POLYOL BASED POLYURETHANES CONTAINING INERT FILLERS AND AS A TEAR STRENGTH IMPROVER A MINOR PORTION OF ATTAPULGITE.
Inventors
- 👤 George G Sapp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:34
CPC Classifications
E; E01; E01C; E01C13/00; E01C13/06; E01C13/065; C; C08; C08K; C08K3/00; C08K3/01; C08K3/013
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-14 | 1974-12-14 | 1975-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-14 | 1978-12-14 | 1979-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-14 | 1982-12-14 | 1983-06-15 | $7700.00 | Window Closed / Lapsed |