Brian E. Duncan — 12 Patents at 3M

Brian E. Duncan has been granted 12 US patents while listed as an inventor at 3M. The first was granted in 2015 and the most recent in August 2025. Brian E. Duncan ranks #396,045 of 4,157,543 US inventors in our database (top 9.5%). Patent records list Brian E. Duncan in Shoreview, MN, US.

Issued Patents All Time

Showing 1–12 of 12 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
12397306	Spray gun converter	—	2025-08-26
12151258	Spray gun and nozzle assembly attachment	Brady P. Haislet, Bryan J. Hayward	2024-11-26	$62,653,000
11766686	Spray gun and nozzle assembly attachment	Brady P. Haislet, Bryan J. Hayward	2023-09-26	$38,915,000
11666934	Spray gun and nozzle assembly attachment	Bryan J. Hayward, Brady P. Haislet, Alexander T. Ebertowski, Scott D. Gullicks, Anna M. Hegdahl +1 more	2023-06-06	$30,935,000
11577262	Nozzle assembly with auxiliary apertures	John B. Scheibner, Elaine M. Yorkgitis, Ryan D. Erickson	2023-02-14	$28,762,000
11229921	Spray gun and nozzle assembly attachment	Brady P. Haislet, Bryan J. Hayward	2022-01-25	$60,294,000
11167298	Spray gun barrel with inseparable nozzle	Stephen C. P. Joseph	2021-11-09	$44,597,000
11154894	Spray gun and nozzle assembly attachment	Bryan J. Hayward, Brady P. Haislet, Alexander T. Ebertowski, Scott D. Gullicks, Anna M. Hegdahl +1 more	2021-10-26	$49,227,000
10501243	Vent assembly and reservoirs including the same	Claudia M. Mulvaney, Daniel E. Siltberg	2019-12-10	$41,236,000
D804613	Spray gun nozzle	Alexander T. Ebertowski, Scott D. Gullicks, Anna M. Hegdahl, Stephen C. P. Joseph	2017-12-05
9802211	Spray head assemblies for liquid spray guns	Stephen C. P. Joseph	2017-10-31	$24,909,000
D725744	System for identifying spray guns	Eric O. Nyaribo, John I. Escoto, Jr.	2015-03-31

Brian E. Duncan — 12 Patents

Issued Patents All Time

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