Patent Portfolio

Below is a comprehensive list of U.S. patents and published applications credited to Joseph T. Zachariasen. This portfolio includes innovations in tool sharpening systems, additive manufacturing for medical and orthotic devices, ankle-foot orthotics, and product design.

Utility Patents & Published Applications:

Sharpener with Swing Arm Abrasive Assembly
Patent No.: 11,975,420 (Granted May 7, 2024)
Application: 20240198476 (Published Jun 20, 2024)

Precision Adjust Sharpener
Patent No.: 11,883,930 (Granted Jan 30, 2024)
Application: 20240051088 (Published Feb 15, 2024)

Additive Manufacturing with a Plurality of Materials
Patent No.: 11,806,928 (Granted Nov 7, 2023)

Use of Additive Manufacturing in Custom Orthoses
Patent No.: 11,364,138 (Granted Jan 31, 2023)
Application: 20150328840 (Published Nov 19, 2015)

Breakaway Clasp for Headwear
Patent No.: 11,547,170 (Granted Jan 10, 2023)

Sharpener with Precise Adjustment Capabilities
Patent No.: 11,498,186 (Granted Nov 15, 2022)

Foldable Tool Sharpener
Patent No.: 11,267,103 (Granted Mar 1, 2022)

Use of Additive Manufacturing in Custom Wearable and/or Implantable Medical Devices
Patent No.: 10,675,855 (Granted Jun 9, 2020)

Breakaway Clasp for Headwear
Patent No.: 10,448,694 (Granted Oct 22, 2019)

Elastic Sizing Mechanism (Headwear)
Patent No.: 9,763,486 (Granted Sep 19, 2017)

Use of Additive Manufacturing in Custom Orthoses
Patent No.: 9,610,731 (Granted Apr 4, 2017)

Use of Additive Manufacturing in Custom Wearable and/or Implantable Medical Devices
Patent No.: 9,469,075 (Granted Oct 18, 2016)

Ankle Control System and Method
Patent No.: 9,364,363 (Granted Jun 14, 2016)

Orthosis and orthotic methods for applying localized force to a wearers back
Patent No.: US20130289461A1 (Published Oct 31, 2013)

Design Patents:

Foldable Tool Sharpener (Design)
Patent No.: D911,142 (Granted Feb 23, 2021)

Knife Sharpener Design Variant 1
Patent No.: D929,841 (Granted Sep 7, 2021)

Knife Sharpener Design Variant 2
Patent No.: D929,842 (Granted Sep 7, 2021)

Knife Sharpener Design Variant 3
Patent No.: D929,843 (Granted Sep 7, 2021)

Angle Set Knife Sharpener
Patent No.: D944,618 (Granted Mar 1, 2022)