Process for hydrolyzing polyphosphoric acid in a spun yarn
US7906615B2 · kind B2 · utility
1Cited by
36References
18Claims
0Family size
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Key dates
| Filing date | Mar 27, 2006 |
| Grant date | Mar 15, 2011 |
| Priority date | — |
| Expiry date | Jan 14, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2913
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The present invention relates to processes for hydrolyzing polyphosphoric acid in a fiber and the removal of hydrolyzed polyphosphoric acid from the fiber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.