Inventor

NEFZGER HARTMUT

DE61 patents

⚠️ This page may combine multiple inventors who share the name “NEFZGER HARTMUT”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

NEFZGER HARTMUT

COVESTRO DEUTSCHLAND AG

Rigid PUR/PIR foams of isopropylidenediphenol-based polyethers

Method for producing polyether carbonate polyols

Method for producing polyether carbonate polyols

Use of urethane alcohols for preparation of polyether polyols

Method for producing polyether carbonate polyols

Use of alcohols containing at least two urethane groups for preparation of polyether polyols

Polycarbonate polyols, polyisocyanate prepolymers and polyurethane and polyurethane urea elastomers based thereon

Flame-retardant polyurethane rigid foams

Method for preparing optical lenses

Use of alcohols which contain at least two urethane groups for producing polyether carbonate polyols

Flame-retarded rigid polyurethane foams

Polyurethane foams based on polyethercarbonate polyols

PUR/PIR rigid foams made of polyaddition oligoesters

BAYER AG

Delayed action catalysts for carpet backing and air frothed foam

Process for the production of hydroxyfunctional compounds from (polyurethane) polyurea waste

Polyurethane elastomers and processes for their preparation and use

Process for the production of compounds containing hydroxyl groups from (polyurethane) polyurea waste materials

Plasticizers for bowling ball coverstocks

Process for polymerizing isocyanates

Titanium/zirconium catalysts and their use to prepare esters or polyesters

Process for conditioning and stabilizing polyols

Process for preparing oligomeric aliphatic diols, polycarbonatediols based thereon and prepolymers thereof

Process for the production of delayed action tin catalysts

BAYER MATERIALSCIENCE AG

Poly(ether-ester) polyols and processes for their production

Polyester polyols, a process for the production thereof and the use thereof

Polymer dispersions in polyester polyols

Lightfast polyurethane composition

Polymer dispersions in polyester polyols

Poly(ether-ester) polyols and processes for their production

Polyester polyols with long-chain polyether polyol building blocks and use thereof in rigid pur/pir foams

Process for cleaning production plants for polyester polyols

NEFZGER HARTMUT

Polyurethane and polyurethane urea elastomers based on polycarbonate polyols

Process for the preparation of a polyurethane polymer with secondary hydroxyl end groups comprising polyester polyols

Process for the production of polyester polyols with low volumes of dioxane waste

Polyester polyols from terephthalic acid and oligoalkylene oxides

Process for the preparation of polyricinoleic acid ester polyols having primary hydroxyl end groups

Process for producing polyester polyols having secondary OH end groups

Process for producing polyether polyols having primary hydroxyl end groups

ADHESYS MEDICAL GMBH

Hydroxy amino polymer and use thereof in polyurea/polyurethane tissue adhesives

Polyurea systems, processes for preparing the same and use thereof for postoperative adhesion barriers

Polyurea-based fabric glue

Hydroxy amino polymer and use thereof in polyurea/polyurethane tissue adhesives

HECKROTH HEIKE

Polyurea-based fabric glue

Polyurea systems, processes for preparing the same and use thereof for postoperative adhesion barriers

COVESTRO INTELLECTUAL PROPERTY GMBH & CO KG

Urethanases for the enzymatic degradation of polyurethanes

Polyurethane foams based on polyethercarbonate polyols

MEDICAL ADHESIVE REVOLUTION GMBH

Polyurea-based fabric glue

BAYER IP GMBH

Homogeneous extruded articles made from thermoplastically processable polyurethanes based on polyester diols formed from succinic acid and 1,3-propanediol

HUPKA FLORIAN

High-value polyurethane elastomers and production thereof

ROERS ROLF

Method for producing polyester polyols having low amounts of dioxane waste