Multiwall sheet, an article, a method of making a multiwall sheet
US8889248B2 · kind B2 · utility
2Cited by
28References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 31, 2008 |
| Grant date | Nov 18, 2014 |
| Priority date | — |
| Expiry date | Jul 6, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24744
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Disclosed herein is a multiwall sheet that comprises a first wall, a second wall, an intermediate wall disposed between the first wall and the second wall, a first set of ribs disposed between the first wall and the intermediate wall, and a second set of ribs disposed between the second wall and the intermediate wall. No ribs are in direct vertical alignment so as to align from the first wall to the second wall and no ribs are on a side of the first wall opposite the intermediate wall or on a side of the second wall opposite the intermediate wall. Also disclosed is a method for making a multiwall sheet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.