US3832269A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anti-dust sheets
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1972-07-24
•
Granted: 1974-08-27
•
Expires: 1992-07-24
Abstract
Abstract A LAMINATED THERMOPLASTIC SHEET HAVING AN ANTI-DUST SURFACE, COMPRISES AT LEAST ONE FOIL CONTAINING CARBON BLACK (PREFERABLY CONTAINING AT LEAST 10 PARTS BY WEIGHT OF CARBON BLACK PER 100 PARTS BY WEIGHT OF THERMOPLASTIC) PREFERABLY SANDWICHED BETWEEN OTHER FOILS NOT CONTAINING CARBON BLACK WHICH PROVIDE THE ANTI-DUST SURFACE. THE ANTI-DUST SURFACE IS PREFERABLY SITUATED LESS THAN 2.3 MM. FROM THE NEAREST SURFACE OF A FOIL CONTAINING CARBON BLACK. THE INVENTION IS PARTICULARLY USEFUL FOR POLY(VINYL CHLORIDE) SHEETING.
Inventors
- 👤 R Butler
- 👤 I Lewis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:14
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/18; B32B27/06; B32B27/08; B32B27/12; B32B27/30; B32B27/304; B32B2264/00; B32B2264/10; B32B2264/107; B32B2264/108; B32B2307/00; B32B2307/70; B32B2307/754; B32B2327/00; B32B2327/06; Y; Y10; Y10T; Y10T428/00; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/265
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) | 1977-08-26 | 1978-02-25 | 1978-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-26 | 1982-02-25 | 1982-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-26 | 1986-02-25 | 1986-08-27 | $7700.00 | Window Closed / Lapsed |