Inventor
SHAFER SHELDON JAY
US11 patents
⚠️ This page may combine multiple inventors who share the name “SHAFER SHELDON JAY”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
GEN ELECTRIC
10 patentsUS5760272AJun 2, 1998
Method for preparing diaryl carbonates with improved selectivity
GEN ELECTRIC74 citations95
US5981788ANov 9, 1999
Method for recovering and recycling catalyst constituents
GEN ELECTRIC29 citations92
US5723689AMar 3, 1998
Process for recovering bisphenols
GEN ELECTRIC18 citations91
US6303835B1Oct 16, 2001
Method for recovering material values from bisphenol tars
GEN ELECTRIC14 citations73
US5898079AApr 27, 1999
Method for preparing diaryl carbonates employing hexaalkylguanidinium halides
GEN ELECTRIC10 citations73
US5898080AApr 27, 1999
Method for preparing diaryl carbonates employing hexaalkylguanidinium halides
GEN ELECTRIC4 citations62
US6680270B2Jan 20, 2004
Regeneration of catalysts used in the manufacture of bisphenols
GEN ELECTRIC2 citations56
US7371902B2May 13, 2008
Methods for purifying p,p-bisphenol-A
GEN ELECTRIC3 citations51
US5908952AJun 1, 1999
Method for preparing diaryl carbonates employing β-diketone salts
GEN ELECTRIC1 citations51
US5756801AMay 26, 1998
Method of purifying diphenyl carbonate-phenol adduct
GEN ELECTRIC0 citations51