For the Inventor, By the Inventor

Enter assignee name

Lennestadt, Germany

Tracto-technik Paul Schmidt Spezialmaschinen

USPTO Granted Patents = 25

Trademarks = 1

Forward Citations = 213

Loading Chart...

Loading Chart...

13 inventors (with patents filed for the assignee):

Alfons Hesse (11 out of 28 patents)

Franz-Josef Püttmann (8 out of 8 patents)

Franz-Josef Püttmann (7 out of 42 patents)

4. Gerhard Balve (5 out of 9 patents)

5. Franz-Josef Puttman (3 out of 3 patents)

6. Dieter Wurm (2 out of 12 patents)

7. Joachim Schmidt (1 out of 3 patents)

8. Manfred Schauerte (1 out of 12 patents)

9. Gerhard Völkel (1 out of 14 patents)

10. Andreas Riekes (1 out of 3 patents)

11. Frank Prutti (1 out of 3 patents)

12. Klaus Zerbs (1 out of 2 patents)

13. Bernhard Kaufmann (1 out of 1 patent)

25 patents: Sort by Forward Citations

1. 7575071 - Continuous mixing system (2009-08-18),

2. 6644887 - Device for connecting a towed pipe to a towing apparatus (2003-11-11),

3. 6510905 - Earth boring apparatus (2003-01-28),

4. 6491476 - Method and apparatus for the trenchless laying of pipework underground (2002-12-10),

5. 6406215 - Positive connection between a pipe and a ring inserted into the pipe (2002-06-18),

6. 6371220 - Pneumatically reversible ram drilling tool (2002-04-16),

7. 6364036 - Automatic rod assembly (2002-04-02),

8. 6352128 - Steered-head ram drilling tool (2002-03-05),

9. 6340270 - Apparatus and method for the longitudinal splitting of pipes laid underground (2002-01-22),

10. 6267187 - Boring apparatus with coupling for rapid connection of drill string segments (2001-07-31),

11. 6244783 - Widening apparatus (2001-06-12),

12. 6238141 - Apparatus for static underground drilling (2001-05-29),

13. 6199643 - Method and apparatus for directional boring (2001-03-13),

14. 5980157 - Ground-boring machine (1999-11-09),

15. 5975221 - Machine for horizontal percussion boring (1999-11-02),

Tracto-technik Paul Schmidt Spezialmaschinen is a leading manufacturer of innovative underground installation and renewal equipment. With over 60 years of experience, the company continuously develops and produces state-of-the-art machinery for trenchless pipe installation and pipe rehabilitation. Tracto-technik's diverse product range includes drilling rigs, pipe bursting systems, and inspection vehicles, which are used worldwide by contractors, utilities, and municipalities. The company is committed to providing reliable and efficient solutions for the construction and maintenance of underground infrastructure.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Dec 16 2025

25 Patents

#2 in

#1,867 in Germany

#24,930 in the World

Lennestadt, Germany

Tracto-technik Paul Schmidt Spezialmaschinen

Forward Citations = 213

13 inventors:

Alfons Hesse (11 out of 28 patents)

Franz-Josef Püttmann (8 out of 8 patents)

Franz-Josef Püttmann (7 out of 42 patents)

4. Gerhard Balve (5 out of 9 patents)

5. Franz-Josef Puttman (3 out of 3 patents)

Please report any incorrect information to support@idiyas.com

Loading…