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For the Inventor, By the Inventor

Mukwonago, WI, United States of America

Empire Level Mfg. Co.

Calculating rank
USPTO Granted Patents = 10

% Expired Patents = 20.0


Forward Citations = 110

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8 inventors (with patents filed for the assignee):

goldMedal Charles D Kim (4 out of 21 patents)

silverMedal John R Christianson (3 out of 25 patents)

bronzeMedal Steven Wayne Bockmann (2 out of 11 patents)

4.  Roger A Bohman (2 out of 3 patents)

5.  Robert J Kram (2 out of 5 patents)

6.  Joseph B Coel (1 out of 8 patents)

7.  Thomas A Lindner (1 out of 4 patents)

8.  Ryan Sprouse Dart (1 out of 1 patent)


10 patents:

1. 7832112 - Vial-mounting structure (2010-11-16),
2. 7797847 - Hands-free level (2010-09-21),
3. D623544 - Box level (2010-09-14),
4. D618120 - Side brace for central-vial region of a box level (2010-06-22),
5. 7739804 - Hands-free long level (2010-06-22),
6. D521882 - Torpedo level (2006-05-30),
7. D514961 - Keyhold cross-section level (2006-02-14),
8. D466824 - Closed measuring tape case (2002-12-11),
9. D466423 - Open reel measuring tape (2002-12-04),
10. 5588217 - Level vial assembly with encapsulated vial (1996-12-31),
Company Overview
Empire Level Mfg. Co. is a prominent manufacturer based in Mukwonago, Wisconsin, specializing in precision leveling tools and measuring instruments. The company focuses on developing high-quality products that cater to the needs of construction professionals and craftsmen. With a commitment to innovation, Empire Level integrates advanced technology into its offerings, ensuring accuracy and reliability in various applications. The company serves a diverse market, enhancing productivity and efficiency in construction and related industries.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 27 2026

Empire Level Mfg. Co. USPTO Patent Assignee Logo
10 Patents

#3 in Mukwonago, WI

#668 in Wisconsin

#29,892 in US

#56,119 in the World

Mukwonago, WI (US)
Mukwonago, WI, United States of America

Empire Level Mfg. Co.

Forward Citations = 110

8 inventors:

goldMedal Charles D Kim (4 out of 21 patents)

silverMedal John R Christianson (3 out of 25 patents)

bronzeMedal Steven Wayne Bockmann (2 out of 11 patents)

4.  Roger A Bohman (2 out of 3 patents)

5.  Robert J Kram (2 out of 5 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Empire Level Mfg. Co.. Retrieved from https://idiyas.com/company/empire-level-mfg-company

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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