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Dirk Leinweber — 30 Patents

CLClariant: 13 patents #21 of 540Top 4%
CGClariant Produkte (Deutschland) Gmbh: 10 patents #6 of 262Top 3%
CLClariant Finance (Bvi) Limited: 5 patents #59 of 535Top 15%
UBUniversiteit Utrecht Holding B.V.: 1 patents #28 of 74Top 40%
Kelkheim, DE: #16 of 511 inventorsTop 4%
Overall (All Time): #121,623 of 4,157,543Top 3%
30 Patents All Time
Dirk Leinweber has been granted 30 US patents. The first was granted in 2006 and the most recent in November 2025. Dirk Leinweber ranks #121,623 of 4,157,543 US inventors in our database (top 2.9%). Patent records list Dirk Leinweber in Kelkheim, DE.

Issued Patents All Time

Showing 1–25 of 30 patents

Patent #TitleCo-InventorsDate
12480073 Ethoxylated glycerol ester-containing detergent for machine dishwashing Hannah Benson, Felix HÖVELMANN 2025-11-25
12479957 Ethoxylated glycerol esters and method for the production thereof Felix HÖVELMANN, Hannah Benson 2025-11-25
12138638 Composition and method for use of 1-alkyl-5-oxopyrrolidine-3-carboxylic acids as collectors for phosphate and lithium flotation Adriana Grossmann, Wagner Claudio Da Silva, Leandro Seixas BICALHO 2024-11-12
12129427 Synergistic blends of anti-agglomerant gas hydrate inhibitors with quaternary alkyl ammonium compounds Zachary Thomas Ward, Felix Hoevelmann, Jonathan James Wylde, Matthias Krull 2024-10-29
12037537 Method of and a composition for controlling gas hydrate blockage through the addition of a synergistically acting blend with alkoxylates of fatty alcohols, fatty amines and fatty acids Zachary Thomas Ward, Felix Hoevelmann, Jonathan James Wylde 2024-07-16
11898091 Synergistic blends of anti-agglomerant gas hydrate inhibitors with quaternary benzyl ammonium compounds Zachary Thomas Ward, Felix Hoevelmann, Jonathan James Wylde, Matthias Krull 2024-02-13
11845892 Use of complex polyesteramines and polyester polyquaternary ammonium compounds as corrosion inhibitors Tobias PLATEN, Nihal N. Obeyesekere, Matthias Krull 2023-12-19
11572499 Method of and a composition for controlling gas hydrate blockage through the addition of a synergistically acting blend with a quaternary benzyl ammonium compound Zachary Thomas Ward, Felix Hoevelmann, Jonathan James Wylde 2023-02-07
11266587 Oligoester ammonium salts and their use in compositions for conditioning hair Katarzyna KITA-TOKARCZYK, Hannah Benson, Henrike Neuhoff, Steffen ROMANSKI, Nadine Zoumpoulakis 2022-03-08
11161804 Unsymmetrically substituted dicarboxylic acid diamido ammonium salts and their use for gas hydrate anti-agglomeration Nirupam Purkayastha, Zachary Thomas Ward, Fabian Schneider, Matthias Krull, Jonathan James Wylde 2021-11-02
10993898 Fatty acid esters of oxalkylated alkylalkylenediamines and salts thereof and compositions for conditioning of hair Hannah Benson, Henrike Neuhoff, Katarzyna KITA-TOKARCZYK 2021-05-04
10238591 Cosmetic compositions comprising estolide esters and uses for hair treatment Hannah Benson, Katarzyna KITA-TOKARCZYK, Henrike Neuhoff, Anton KRATZ, Steffen ROMANSKI 2019-03-26
9956547 Preparation of polyglycerols Anton Kaiser, Bert Marc Weckhuysen, Fiona Kirby, Franz-Xaver Scherl, Hans Joachim Metz +1 more 2018-05-01
9452981 Pyroglutamic acid esters with improved biodegradability Michael Feustel 2016-09-27
9334243 N-alkyl-N′-poly(oxyalkyl)hexahydropyrimidine-quaternary ammonium salts and the use thereof as corrosion inhibitors Hannah Benson, Nihal U. Obeyesekere, Thenuka Ariyaratna 2016-05-10
8920542 Additives for inhibiting gas hydrate formation Alexander Roesch, Carsten Schaefer 2014-12-30
8920543 Additives for inhibition of gas hydrate formation Alexander Roesch, Carsten Schaefer, Alexander Woerndle 2014-12-30
8735332 Use of pyroglutamic acid esters as gas hydrate inhibitors with improved biodegradability Michael Feustel 2014-05-27
8722589 Use of 1-alkyl-5-oxopyrrolidine-3-carboxylic esters as gas hydrate inhibitors with improved biodegradability Alexander Roesch, Michael Feustel 2014-05-13
8350058 Method for producing alkenyl succinic anhydrides Tobias Rau 2013-01-08
8349215 Corrosion inhibitors having increased biological degradability and minimized toxicity Alexander Roesch, Michael Feustel 2013-01-08
8067651 1-alkyl-5-oxopyrrolidine-3-carboxylic esters with improved biodegradability Alexander Roesch, Michael Feustel 2011-11-29
7893009 Polymers and their production and use as gas hydrate inhibitors Michael Feustel 2011-02-22
7815698 Demulsifiers for mixtures of middle distillates with fuel oils of vegetable or animal origin and water Bettina Siggelkow, Werner Reimann, Ulrike Neuhaus, Renate Braun 2010-10-19
7671098 Alkoxylated, cross-linked polyglycerols and use thereof as biodegradable demulsifier Franz-Xaver Scherl, Elisabeth Wasmund, Heidi Rausch 2010-03-02

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