Issued Patents All Time
Showing 1–25 of 35 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10435609 | Hydrophilic ether carboxylic acids as lubricant for salt based drilling systems | Diana Maker | 2019-10-08 |
| 10253236 | Environmental friendly well treatment fluids comprising an ester | Diana Maker | 2019-04-09 |
| 10227545 | Additives for oilfield and industrial applications | Diana Maker | 2019-03-12 |
| 9982182 | Drilling composition, process for its preparation, and applications thereof | Nadja Herzog, Diana Maker, Michael Fefer, Jun Liu | 2018-05-29 |
| 9896613 | Esters for drilling emulsions and metal working fluids | Diana Maker, Patrick Hähnel | 2018-02-20 |
| 9745502 | Drilling composition, process for its preparation, and applications thereof | Nadja Herzog, Diana Maker, Michael Fefer, Jun Liu | 2017-08-29 |
| 9085524 | Method for the production of carboxylic acid esters during a transport | Diana Maker | 2015-07-21 |
| 8763724 | Emulsion-based cleaning composition for oilfield applications | Diana Maker | 2014-07-01 |
| 8524794 | Hydrophilic membranes | Daniel Mullette | 2013-09-03 |
| 8236735 | Oligoglycerol fatty acid ester lubricant additives for drilling fluids | Diana Maker | 2012-08-07 |
| 8193125 | Crosslinked glycerol or oligoglycerol esters, and use thereof as an additive in drilling fluids | Diana Maker, Nadja Herzog, Alfred Westfechtel | 2012-06-05 |
| 8153562 | Oligoglycerol fatty acid ester thickeners for oil-based drilling fluids | Diana Maker, Nadja Herzog | 2012-04-10 |
| 8148305 | Oligoglyercol fatty acid ester additives for water-based drilling fluids | Alfred Westfechtel, Diana Maker | 2012-04-03 |
| 7988891 | Monopersulfate treatment of membranes | Dongliang Wang, Nina Elbaz | 2011-08-02 |
| 7836606 | Sterile freezing, drying, storing, assaying and filling process | Dietrich Gehrmann, Ariane Firus, Thomas Daun, Deqian Wang | 2010-11-23 |
| 7819956 | Gas transfer membrane | — | 2010-10-26 |
| 7632439 | Poly(ethylene chlorotrifluoroethylene) membranes | Daniel Mullette | 2009-12-15 |
| 7404896 | Modified membranes | — | 2008-07-29 |
| 7300022 | Modified membranes | — | 2007-11-27 |
| 7247238 | Poly(ethylene chlorotrifluoroethylene) membranes | Daniel Mullette | 2007-07-24 |
| 7226541 | Membrane polymer compositions | Daniel Mullette | 2007-06-05 |
| 6884350 | Modified membranes | — | 2005-04-26 |
| 5868973 | Process and apparatus for producing fibrets from cellulose derivatives | Rudiger Leibnitz, Udo Holzki | 1999-02-09 |
| 5846601 | Use of selected polyvinyl acetate dispersions for the surface stabilization of sand and/or soil | Wolfgang Ritter, Stephan von Tapavicza, Hartmut Busching | 1998-12-08 |
| 5770140 | Curable compositions | — | 1998-06-23 |