Inventor
Johann Kreidl
Inventor
Waldkraiburg, DE
Overview
Patents· 16 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
F04Cprimary
F04CRotary-piston, or oscillating-piston, positive-displacement machines for liquids63%
F01CRotary-piston or oscillating-piston machines or engines13%
F16JPistons8%
F04BPositive-displacement machines for liquids4%
F16DCouplings for transmitting rotation4%
F16NLubricating4%
Y10TTechnical subjects covered by former us classification4%
PatentTitleYear
10,563,651Stator for an eccentric screw pump, an eccentric screw pump and a method for producing a stator202010,385,977Shaft slide ring seal arrangement20199,869,314'Screw pump'20189,759,214'Screw pump with at least two parts'20179,617,995'Rotary piston pump with slip ring seals for improved fitting and synchronization of rotary pistons'20179,617,992'Rotary piston pump with optimised inlets and outlets'20179,611,850'Method and device for fixing and synchronizing rotary pistons in a rotary piston pump'20179,028,233'Rotary piston pump and method for operating a rotary piston pump'20158,033,802'Stator casing for eccentric worm pumps'20118,007,259'Stator system'20117,871,253'Stator clamping device for eccentric screw pump'20117,104,770'Eccentric screw-type pump with spare stator'20067,040,878'Eccentric screw-type pump'20065,318,416'Casing of an eccentric worm pump designed to burst at preselected pressure'19944,909,773'Swivel coupling'19904,863,359'Stator for eccentric worm pumps'1989Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1989–2011Patents assigned to NETZSCH MOHNOPUMPEN GMBH (8)· patent assignee history
1989–2020Based in Waldkraiburg, DE· patent location history
2015–2020Patents assigned to NETZSCH PUMPEN & SYSTEME GMBH (8)· patent assignee history
2020Patents assigned to 3S SCHNECKEN SPINDELN & SPIRALEN BEARBEITUNGSGES M B H (1)· patent assignee history
2020Patents assigned to 3S SCHNECKEN SPINDELN & SPIRALEN BEARBEITUNGSGES MBH (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| NETZSCH MOHNOPUMPEN GMBH | 8 | 1989–2011 |
| NETZSCH PUMPEN & SYSTEME GMBH | 8 | 2015–2020 |
| 3S SCHNECKEN SPINDELN & SPIRALEN BEARBEITUNGSGES M B H | 1 | 2020 |
| 3S SCHNECKEN SPINDELN & SPIRALEN BEARBEITUNGSGES MBH | 1 | 2020 |
Locations
| Location | Patents | Span |
|---|---|---|
| Waldkraiburg, DE | 16 | 1989–2020 |