Inventor
HEIJL JAN
BE10 patents
⚠️ This page may combine multiple inventors who share the name “HEIJL JAN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
COVESTRO DEUTSCHLAND AG
6 patentsUS11459424B2Oct 4, 2022
Method for producing polycarbonate
COVESTRO DEUTSCHLAND AG0 citations56
US10167364B2Jan 1, 2019
Process for preparing polycarbonates by transesterifying dithiocarbonates or selenium analogues thereof with bisphenols
COVESTRO DEUTSCHLAND AG0 citations48
US12195623B2Jan 14, 2025
Composition and method for producing a transparent thermoplastic polycarbonate/polymethyl methacrylate moulding compound
COVESTRO DEUTSCHLAND AG0 citations44
US10370491B2Aug 6, 2019
Preparation of highly heat-resistant (co)polycarbonates by the transesterification method
COVESTRO DEUTSCHLAND AG0 citations42
US11149116B2Oct 19, 2021
Process for producing a polycarbonate using an organic solvent based on chlorohydrocarbons
COVESTRO DEUTSCHLAND AG0 citations41
US9771451B2Sep 26, 2017
Method for producing polycarbonate according to the phase interface method
COVESTRO DEUTSCHLAND AG0 citations36
COVESTRO INTELLECTUAL PROPERTY GMBH & CO KG
4 patentsUS12473397B2Nov 18, 2025
Polyester carbonates from aliphatic diacids and aliphatic diols, and process for the production thereof
COVESTRO INTELLECTUAL PROPERTY GMBH & CO KG0 citations59
US12173150B2Dec 24, 2024
Polyester carbonates from cycloaliphatic diacids and aliphatic diols, and process for preparing same
COVESTRO INTELLECTUAL PROPERTY GMBH & CO KG1 citations59
US11420918B2Aug 23, 2022
Method for producing a hydroxy compound by decarboxylation in the absence of a catalyst
COVESTRO INTELLECTUAL PROPERTY GMBH & CO KG0 citations55
US11319270B2May 3, 2022
Process for preparing a hydroxy compound by means of decarboxylation
COVESTRO INTELLECTUAL PROPERTY GMBH & CO KG0 citations44