Method for treating residue from the production of organic isocyanates
US-2026062379-A1 · Mar 5, 2026 · US
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Merkel Michael patents
Merkel Michael is listed as an inventor on 47 patents in our database. Major assignees and classification codes are summarized below.
| Metric | Value |
|---|---|
| Inventor | Merkel Michael |
| Total patents | 47 |
| First publication | Mar 12, 2015 |
| Latest publication | Mar 5, 2026 |
Notable patents
Publications ranked by popularity score, then publication date.
Process for the distillation of isocyanates
US-12509419-B2 · Dec 30, 2025 · US
Method for producing isocyanates
US-2025154097-A1 · May 15, 2025 · US
Method for preparing isocyanates
US-2025129017-A1 · Apr 24, 2025 · US
Method for preparing an amine hydrochloride suspension
US-12151997-B2 · Nov 26, 2024 · US
Obtaining Aliphatic Amines from Compositions
US-2024343674-A1 · Oct 17, 2024 · US
Method for the Processing and Transport of Hexane-1,6-Diamine or Pentane-1,5-Diamine
US-2024336555-A1 · Oct 10, 2024 · US
Method for the Removal of Water from and Transport of Aliphatic Diamines
US-2024336554-A1 · Oct 10, 2024 · US
Reactor and Process for Preparing Isocyanates
US-2024279162-A1 · Aug 22, 2024 · US
Bulk material comprising solid diisocyanates and prepolymers containing urethane groups obtainable therefrom
US-11795260-B2 · Oct 24, 2023 · US
Recent patents
Latest publications not already listed above.
Method for Preparing an Amine Hydrochloride Suspension
US-2023271916-A1 · Aug 31, 2023 · US
Process for the distillation of isocyanates
US-2022380303-A1 · Dec 1, 2022 · US
Distillation of polyisocyanates
US-2022267500-A1 · Aug 25, 2022 · US
Process for separating an organic isocyanate
US-11279670-B2 · Mar 22, 2022 · US
Multistep process for the preparation of diisocyanates
US-11174222-B2 · Nov 16, 2021 · US
Process for preparing polyisocyanates containing urethane groups
US-2021284787-A1 · Sep 16, 2021 · US
Process for separating an organic isocyanate
US-2021171450-A1 · Jun 10, 2021 · US
Bulk material comprising solid diisocyanates and prepolymers containing urethane groups obtainable therefrom
US-2021163658-A1 · Jun 3, 2021 · US
Cleaning device for gas flows from isocyanate production
US-10919845-B2 · Feb 16, 2021 · US
Method for recovering diisocyanates from distillation residues
US-2021024459-A1 · Jan 28, 2021 · US
Aniline purification process
US-10889539-B2 · Jan 12, 2021 · US
Method for preparing an amine hydrochloride suspension
US-2020392074-A1 · Dec 17, 2020 · US
Process for the preparation of di- or polyformamides
US-2020369601-A1 · Nov 26, 2020 · US
Energy-efficient method for providing a purified phosgene vapor
US-10843927-B2 · Nov 24, 2020 · US
Process for the preparation of isocyanates
US-2020339505-A1 · Oct 29, 2020 · US
Multistep process for the preparation of hexamethylene diisocyanate, pentamethylene diisocyanate or toluene diisocyanate
US-2020277254-A1 · Sep 3, 2020 · US
Multistep process for the preparation of diisocyanates
US-2020277253-A1 · Sep 3, 2020 · US
Energy-efficient method for providing a purified phosgene vapor
US-2020180965-A1 · Jun 11, 2020 · US
Aniline purification process
US-2020123097-A1 · Apr 23, 2020 · US
Cleaning device for gas flows from isocyanate production
US-2020024225-A1 · Jan 23, 2020 · US
Major assignees
Companies most often associated with this inventor's publications.
| Assignee | Patents |
|---|---|
| Covestro Deutschland Ag | 24 |
| Bayer Materialscience Ag | 11 |
| Covestro Intellectual Property Gmbh & Co Kg | 9 |
| Bayer Ip Gmbh | 6 |
| Merkel Michael | 5 |
Top CPC classifications
Most common classification codes across this inventor's patents.
| CPC | Patents |
|---|---|
| C07C263/10 | 17 |
| C07C209/84 | 13 |
| C07C209/36 | 11 |
| C07C263/20 | 11 |
| C07C265/14 | 10 |