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For the Inventor, By the Inventor

Bad Oeynhausen, Germany

Friedrich Theysohn Gmbh

USPTO Granted Patents = 13

Forward Citations = 80

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11 inventors (with patents filed for the assignee):

goldMedal Alfred Nogossek (3 out of 7 patents)

silverMedal Siegfried Topf (2 out of 4 patents)

bronzeMedal Siegfried Topf (2 out of 2 patents)

4.  Ludwig Reisinger (2 out of 13 patents)

5.  Hans Groblacher (2 out of 2 patents)

6.  Werner G Psiuk (2 out of 2 patents)

7.  Ernst Kruger (2 out of 3 patents)

8.  Reinhard Klose (1 out of 4 patents)

9.  Horst Eigruber (1 out of 6 patents)

10.  Helmut Habisohn (1 out of 1 patent)

11.  Michael Reuter (1 out of 1 patent)


13 patents:

1. 5474720 - Method of and apparatus for producing elongated shaped bodies of (1995-12-12),
2. 5422049 - Method and apparatus for the plastifying of synthetic resins (1995-06-06),
3. 5405660 - Method of generating a wear-reducing layer on a plastifying worm or screw (1995-04-11),
4. 5382146 - Control device for the mechanical thermal adjustment of the nozzle of an (1995-01-17),
5. 5362146 - Plastifier with disk and pin throttle for plastic materials (1994-11-08),
6. 5352539 - Extruder housing for double-screw extruder having an annularly stepped (1994-10-04),
7. 5350231 - Double worm extruder with meshing screws (1994-09-27),
8. 5302106 - Double-worm extruder with polygonal-disk kneader (1994-04-12),
9. 5255973 - Plastifier with throttle means (1993-10-26),
10. 5238165 - Extrudate hauler with upper and lower endless tracks with yaw adjustment (1993-08-24),
11. 5236325 - Apparatus for producing an extruded profile with thrust-resistant spacer (1993-08-17),
12. 5169650 - Calibration unit for extruded plastic material (1992-12-08),
13. 5139402 - Floating plastics section calibrating device (1992-08-18),
Company Overview
Friedrich Theysohn GmbH, based in Bad Oeynhausen, Germany, specializes in the development and manufacturing of high-quality industrial equipment and components. The company focuses on innovative solutions in the fields of mechanical engineering and automation technology, catering to various sectors including automotive and manufacturing. With a commitment to precision and reliability, Friedrich Theysohn GmbH aims to enhance operational efficiency and productivity for its clients through advanced engineering practices.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 20 2026

13 Patents

#4 in Bad Oeynhausen

#3,085 in Germany

#45,081 in the World

Bad Oeynhausen, DE
Bad Oeynhausen, Germany

Friedrich Theysohn Gmbh

Forward Citations = 80

11 inventors:

goldMedal Alfred Nogossek (3 out of 7 patents)

silverMedal Siegfried Topf (2 out of 4 patents)

bronzeMedal Siegfried Topf (2 out of 2 patents)

4.  Ludwig Reisinger (2 out of 13 patents)

5.  Hans Groblacher (2 out of 2 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Friedrich Theysohn Gmbh. Retrieved from https://idiyas.com/company/friedrich-theysohn

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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