Patrick R.T. Hjort has been granted 4 US patents while listed as an inventor at 3M . The first was granted in 2023 and the most recent in September 2025. Patrick R.T. Hjort ranks #1,080,739 of 4,157,543 US inventors in our database (top 26.0%). Patent records list Patrick R.T. Hjort in Värnamo, SE.
Patents per Year Patents granted per year, 2023 to 2025 Bar chart with a peak of 2 patents in 2025. peak 2 2023: 1 patents 2023 2024: 1 patents 2024 2025: 2 patents 2025
Issued Patents All Time
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Showing 1–4 of 4 patents
Patent # Title Co-Inventors Date Approx Value ⓘ
12426656 Hearing protection device, collision warning system and method of retrofitting a hearing protection device with a detection unit Magnus Johansson , Abel Gladstone Mangam , Henning T. Urban 2025-09-30
12376996 Hearing protector with sensor module and method of retrofitting a hearing protector with a sensor module Henning T. Urban , Jonas Nilsson , Abel Gladstone Mangam , Caroline M. Ylitalo , William Bedingham +1 more 2025-08-05
12102507 Ear cushion system with fluid flow, ear cushion, fluid guide device, headset and headgear with such system Jonas Nilsson , Van Cuong Bui 2024-10-01
$57,454,000
11582548 Cushion for a hearing protector or audio headset Van Cuong Bui , Caroline M. Ylitalo , Caitlin E. Meree , William Bedingham , Assumpta A. G. Bennaars-Eiden +5 more 2023-02-14
$28,762,000
