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For the Inventor, By the Inventor

Cleveland, OH, United States of America

National Union Electric Corporation


USPTO Granted Patents = 48

Trademarks = 4

Forward Citations = 655

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36 inventors (with patents filed for the assignee):

goldMedal Samuel E Hohulin (16 out of 28 patents)

silverMedal Glenn F Zellhoefer (8 out of 8 patents)

bronzeMedal Harold W Schaefer (8 out of 8 patents)

4.  Joyce K Thomas (6 out of 42 patents)

5.  Leonard Hampton (4 out of 5 patents)

6.  Martin E Wiese (4 out of 8 patents)

7.  Joseph F Brooks (4 out of 4 patents)

8.  Arnold L Sepke (3 out of 31 patents)

9.  Kenneth R Parker (3 out of 3 patents)

10.  John H Zauner (2 out of 2 patents)

11.  Scott N Lockhart (2 out of 2 patents)

12.  Clark S Richmond (2 out of 2 patents)

13.  Marco Ferrari (1 out of 4 patents)

14.  William E Hanold (1 out of 6 patents)

15.  John R Backlund (1 out of 1 patent)


Core Competencies:
Cordless Trimmer
Hand-Held Vacuum
Battery Powered
Brush Assembly
Suction Cleaner
Vacuum Cleaner Bag
Thermal Cell
Industrial Vacuum
Air Restraint Device
Carpet Cleaner
Dehumidifier
Hose Coupling

48 patents:

1. 5170561 - Hub attachment for a drive shaft of a cordless grass/weed groomer trimmer (1992-12-15),
2. D315816 - Hand-held vacuum cleaner (1991-03-26),
3. D313293 - Battery powered upright vacuum cleaner (1990-12-25),
4. 4777691 - Motor driven brush assembly for vacuum cleaner (1988-10-18),
5. 4748713 - Vacuum cleaner assembly (1988-06-07),
6. 4742652 - Air restraint device for burnishing machine (1988-05-10),
7. 4701975 - Vacuum cleaner assembly (1987-10-27),
8. D290895 - Battery powered suction broom (1987-07-14),
9. 4665582 - Lightweight battery powered suction broom (1987-05-19),
10. D288971 - Hand-held vacuum cleaner with extended nozzle (1987-03-24),
11. 4648149 - Vacuum cleaner assembly (1987-03-10),
12. 4621390 - Vacuum cleaner assembly (1986-11-11),
13. D283064 - Hand-held vacuum cleaner (1986-03-18),
14. D277517 - Carpet and rug vacuum cleaner (1985-02-05),
15. D277038 - Transparent tool cover for suction cleaners or the like (1985-01-01),
Company Overview
National Union Electric Corporation, based in Cleveland, OH, specializes in the development and manufacturing of innovative cleaning solutions. The company focuses on a range of products including cordless grass trimmers, hand-held vacuum cleaners, and battery-powered vacuums. Their expertise extends to motor-driven brush assemblies and thermal cells, showcasing a commitment to enhancing the efficiency and performance of portable cleaning devices. With a strong emphasis on technology and design, National Union Electric continues to advance the landscape of consumer cleaning appliances.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 20 2026

48 Patents

#49 in Cleveland, OH

#317 in Ohio

#7,288 in US

#14,561 in the World

Cleveland, OH (US)
Cleveland, OH, United States of America

National Union Electric Corporation

Forward Citations = 655

36 inventors:

goldMedal Samuel E Hohulin (16 out of 28 patents)

silverMedal Glenn F Zellhoefer (8 out of 8 patents)

bronzeMedal Harold W Schaefer (8 out of 8 patents)

4.  Joyce K Thomas (6 out of 42 patents)

5.  Leonard Hampton (4 out of 5 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: National Union Electric Corporation. Retrieved from https://idiyas.com/company/national-union-electric

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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