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For the Inventor, By the Inventor

Middletown, OH, United States of America

The Black Clawson Company


USPTO Granted Patents = 120


Forward Citations = 1,525

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83 inventors (with patents filed for the assignee):

goldMedal David E Chupka (27 out of 30 patents)

silverMedal Peter Seifert (26 out of 29 patents)

bronzeMedal Richard S Tetro (12 out of 12 patents)

4.  Derald R Hatton (9 out of 9 patents)

5.  Larry D Markham (7 out of 7 patents)

6.  Terry L Bliss (6 out of 6 patents)

7.  Richard W Phelps (6 out of 6 patents)

8.  Richard W Creagan (5 out of 5 patents)

9.  Heinz K Nowisch (5 out of 5 patents)

10.  Clinton R Parks (4 out of 5 patents)

11.  David E Suica (4 out of 13 patents)

12.  Christopher M Vitori (4 out of 6 patents)

13.  Paul E Harmon (4 out of 4 patents)

14.  Andrew C Martin (4 out of 4 patents)

15.  Robert F Moeller (3 out of 5 patents)


Core Competencies:
Gravure Applicator
Extrusion Die
Continuous Winder
Pulping
Deinking
Hydraulic Adjustable Stop
Extruder Screw
Dewatering Apparatus
High Pressure Water Jet
Froth Flotation
Screening Apparatus
Paper Stock Thickening

120 patents:

1. 6210757 - Pressurized enclosed gravure applicator and method (2001-04-03),
2. 6019924 - Extrusion die with adjusting sliding die lips and method of use (2000-02-01),
3. 5845867 - Continuous winder (1998-12-08),
4. 5762756 - Methods and apparatus for pulping and deinking (1998-06-09),
5. 5711153 - Precision hydraulic adjustable stop (1998-01-27),
6. 5599098 - Extruder screw with multiple flighting (1997-02-04),
7. 5599097 - Extruder screw for plastic extruders (1997-02-04),
8. 5591336 - Apparatus for dewatering and or washing papermaking stock (1997-01-07),
9. 5582686 - High pressure water jet comminuting (1996-12-10),
10. 5466335 - Paper pulp washing (1995-11-14),
11. 5385240 - Screening apparatus with adjustable hydrofoil portion (1995-01-31),
12. 5384014 - Apparatus and method for thickening pulp and paper stock (1995-01-24),
13. 5382327 - Apparatus for thickening pulp and paper stock (1995-01-17),
14. 5367894 - Apparatus and method for washing cellulosic pulp (1994-11-29),
15. 5356496 - Splice tail tape-down method and apparatus (1994-10-18),
The Black Clawson Company is a leading manufacturer of industrial machinery and equipment. With over 100 years of experience, they specialize in providing innovative solutions for the pulp and paper, plastics, and packaging industries. Their extensive product range includes screening systems, refining equipment, dewatering machines, and more. They are committed to delivering superior quality, reliability, and customer satisfaction. Visit their website for more information and to explore their cutting-edge technology.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Dec 30 2025

120 Patents

#2 in Middletown, OH

#142 in Ohio

#3,089 in US

#6,451 in the World

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Middletown, OH, United States of America

The Black Clawson Company

Forward Citations = 1,525

83 inventors:

goldMedal David E Chupka (27 out of 30 patents)

silverMedal Peter Seifert (26 out of 29 patents)

bronzeMedal Richard S Tetro (12 out of 12 patents)

4.  Derald R Hatton (9 out of 9 patents)

5.  Larry D Markham (7 out of 7 patents)

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