Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11754432 | System and method for detecting problems within compound water meters | Stefan Grefen, Corey James Boelter | 2023-09-12 |
| 10805393 | System and method for data management structure using auditable delta records in a distributed environment | Stefan Grefen, Astrid Angela Jaehde | 2020-10-13 |
| 10408647 | Analysis of pipe systems with sensor devices | Stefan Grefen, Corey James Boelter, Astrid Angela Jaehde | 2019-09-10 |
| 10302454 | Retrofit device and method of retrofitting a flow meter | Stefan Grefen, Corey James Boelter, Astrid Angela Jaehde | 2019-05-28 |