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For the Inventor, By the Inventor

Alexandria, MN, United States of America

Douglas Machine Inc.


USPTO Granted Patents = 51

% Expired Patents = 33.3



Trademarks = 19

Forward Citations = 461

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62 inventors (with patents filed for the assignee):

goldMedal Irvan Leo Pazdernik (16 out of 30 patents)

silverMedal Richard Jerome Schoeneck (13 out of 21 patents)

bronzeMedal Paul Howard Wagner (12 out of 27 patents)

4.  Richard Willard Lukanen, Jr (11 out of 11 patents)

5.  Ronald Matthew Gust (10 out of 11 patents)

6.  Daniel Leonard Floding (9 out of 9 patents)

7.  Aaron M Frederick (8 out of 8 patents)

8.  Thomas Harold Peterman (8 out of 8 patents)

9.  Christopher Todd Davis (6 out of 8 patents)

10.  Matthew D Toyli (5 out of 5 patents)

11.  Bruce Peterson (5 out of 9 patents)

12.  David Leon Anderson (5 out of 9 patents)

13.  Frank Mathew Brenkus (4 out of 12 patents)

14.  Patrick Joseph Bierschenk (3 out of 28 patents)

15.  Matthew R Crissinger (3 out of 3 patents)


Core Competencies:
Robotic Case Packer
Article Accumulation
Packaging Methods
End of Arm Tool
Case Erector
Film Splicing
Heat Tunnel
Transfer Device
Shrink-Wrap Packaging
Product Metering
Container Groups
Flexible Jaws

51 patents:

1. 12623803 - Sheet carrier conditioning die assembly and conditioning method (2026-05-12),
2. 12384579 - System and process for forming retained container groups from arrayed container groups (2025-08-12),
3. 11905052 - System and process for forming retained container groups from arrayed container groups (2024-02-20),
4. 11505341 - Robotic case packer platform and packing method (2022-11-22),
5. 11383863 - Robotic article handling system and operations (2022-07-12),
6. 11292624 - End of arm tool for loaded case closure (2022-04-05),
7. 11072141 - Robotic case erector (2021-07-27),
8. 10889452 - Article accumulation and article group formation (2021-01-12),
9. 10759556 - Flexible jaws for vertical fill form and seal apparatus and methods of use (2020-09-01),
10. 10759550 - Intermittent case packer assembly and methods (2020-09-01),
11. 10611589 - Auto film splicing assembly with film roll positioner (2020-04-07),
12. 10549924 - Robotic article collation and metering assembly (2020-02-04),
13. 10549923 - Article accumulation pattern building load plate (2020-02-04),
14. 10351355 - Auto changeover infeed assembly (2019-07-16),
15. 9902517 - Apparatus and method for a structurally resilient package (2018-02-27),
Douglas Machine Inc., based in Alexandria, MN, specializes in the development and manufacturing of advanced robotic packaging systems. The company focuses on innovative solutions such as robotic case packers, article accumulation systems, and end-of-arm tooling, enhancing efficiency in packaging processes. With expertise in packaging methods, case erecting, film splicing, and heat tunnels, Douglas Machine Inc. serves a diverse range of industries, providing tailored automation solutions that streamline operations and improve productivity.
Profile summary based on public USPTO records.

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USPTO Data Jan 1 1976 - Sep 29 2026

Douglas Machine Inc.
51 Patents

#1 in Alexandria, MN

#190 in Minnesota

#6,876 in US

#13,753 in the World

Alexandria, MN (US)
Alexandria, MN, United States of America

Douglas Machine Inc.

Forward Citations = 461

62 inventors:

goldMedal Irvan Leo Pazdernik (16 out of 30 patents)

silverMedal Richard Jerome Schoeneck (13 out of 21 patents)

bronzeMedal Paul Howard Wagner (12 out of 27 patents)

4.  Richard Willard Lukanen, Jr (11 out of 11 patents)

5.  Ronald Matthew Gust (10 out of 11 patents)

Please report any incorrect information to [email protected]
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