Hot surface hydrolysis of polyphosphoric acid in spun yarns
US7968030B2 · kind B2 · utility
1Cited by
35References
20Claims
0Family size
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Key dates
| Filing date | Mar 27, 2006 |
| Grant date | Jun 28, 2011 |
| Priority date | — |
| Expiry date | Mar 27, 2026 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD01F6/74
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The present invention relates to processes for hydrolyzing polyphosphoric acid in spun multifilament yarns.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.