Fred E. Hunstable — 46 Patents at Linear Labs

Fred E. Hunstable has been granted 46 US patents while listed as an inventor at Linear Labs. The first was granted in 2014 and the most recent in July 2025. Fred E. Hunstable ranks #62,001 of 4,157,543 US inventors in our database (top 1.5%). Patent records list Fred E. Hunstable in Granbury, TX, US.

Issued Patents All Time

Showing 1–25 of 46 patents

Patent #	Title	Co-Inventors	Date
12374951	System for an electrical motor with a segmented rotor and a segmented stator	Cessar Aguirre, Erik Hatch	2025-07-29
12341393	System for an electrical motor with a segmented rotor and a segmented stator	Cessar Aguirre, Erik Hatch	2025-06-24
12272998	Circumferential flux electric machine with field weakening mechanisms and methods of use	—	2025-04-08
12261486	System and method for an overlapping independent phase electric motor/generator	—	2025-03-25
12206303	Switched reluctance machines without permanent magnets	Andrei Popov, Michael Van Steenburg	2025-01-21
12095394	Induction machines without permanent magnets	Andrei Popov, Michael Van Steenburg	2024-09-17
12021467	Reluctance synchronous machines without permanent magnets	Andrei Popov, Michael Van Steenburg	2024-06-25
12009717	Multi-tunnel electric machine	Michael Van Steenburg, Andrei Popov	2024-06-11
11967866	System and method for controlling a multi-tunnel electric machine	—	2024-04-23
11784529	Torque tunnel Halbach Array electric machine	Michael Van Steenburg, Andrei Popov	2023-10-10
11784546	Circumferential flux electric machine with field weakening mechanisms and methods of use	—	2023-10-10
11784523	Multi-tunnel electric motor/generator	—	2023-10-10
11777386	System and method for an electric motor/generator with a multi-layer stator/rotor assembly	—	2023-10-03
11692616	Crankshaft assembly	—	2023-07-04
11532963	Torque tunnel Halbach Array electric machine	Michael Van Steenburg, Andrei Popov	2022-12-20
11502570	Multi-tunnel electric machine	Michael Van Steenburg, Andrei Popov	2022-11-15
11387692	Brushed electric motor/generator	—	2022-07-12
11374442	Multi-tunnel electric motor/generator	—	2022-06-28
11309778	Multi-tunnel electric motor/generator	—	2022-04-19
11277062	System and method for an electric motor/generator with a multi-layer stator/rotor assembly	—	2022-03-15
11268599	Crankshaft assembly	—	2022-03-08
11258320	Multi-tunnel electric motor/generator	—	2022-02-22
11218067	Method and apparatus for power generation	—	2022-01-04
11218046	DC electric motor/generator with enhanced permanent magnet flux densities	—	2022-01-04
11218038	Control system for an electric motor/generator	—	2022-01-04

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Fred E. Hunstable — 46 Patents

Issued Patents All Time

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