Inventor
SITTER ANDREW J
US12 patents
⚠️ This page may combine multiple inventors who share the name “SITTER ANDREW J”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
ALLEN STEVEN R
9 patentsUS9994974B2Jun 12, 2018
Sulfur and alkali metal containing imidazole fiber having ionically bound halides
ALLEN STEVEN R6 citations83
US9988514B2Jun 5, 2018
Sulfur-containing imidazole fiber having ionically bonded halides
ALLEN STEVEN R6 citations83
US9464370B2Oct 11, 2016
Method for removing sulfur from fiber using an aqueous acid
ALLEN STEVEN R2 citations61
US10240282B2Mar 26, 2019
Process for preparing aramid copolymer yarn using a halide acid wash
ALLEN STEVEN R0 citations51
US9845553B2Dec 19, 2017
Process for preparing aramid copolymer yarn using an acid wash
ALLEN STEVEN R0 citations51
US9732442B2Aug 15, 2017
Process for preparing aramid copolymer yarn having low residual sulfur
ALLEN STEVEN R0 citations51
US9469922B2Oct 18, 2016
Method for removing sulfur from fiber using a weak base
ALLEN STEVEN R0 citations51
US9464380B2Oct 11, 2016
Method for removing sulfur from fiber using halide acid ion exchange
ALLEN STEVEN R0 citations51
US9315923B2Apr 19, 2016
Process for preparing yarn derived from aramid copolymer fiber having low residual sulfur
ALLEN STEVEN R0 citations51
DU PONT
3 patentsUS10400357B2Sep 3, 2019
Sulfur and alkali metal containing imidazole fiber having ionically bound halides
DU PONT4 citations72
US10400082B2Sep 3, 2019
Sulfur-containing imidazole fiber having ionically bonded halides
DU PONT4 citations72
US5136016AAug 4, 1992
Melt-processible aromatic polyamide from n,n'-isophthaloyl bis lactam
DU PONT4 citations60