Partial year: Data through Q3 2025 (Sept 30). Full-year totals not yet available.
RT

Richard Jan Tjaden

SF State Farm: 7 patents #21 of 469Top 5%
📍 Bloomington, IL: #13 of 205 inventorsTop 7%
🗺 Illinois: #136 of 6,351 inventorsTop 3%
Overall (2025): #11,487 of 469,880Top 3%
7
Patents 2025

Issued Patents 2025

Showing 1–7 of 7 patents

Patent #TitleCo-InventorsDate
12359669 Adaptive learning system for improving sump pump control Nathan L. Tofte, Jonathan Christopher Hull, John Donovan 2025-07-15
12264680 Determining and utilizing a desired frequency for a mechanical shaker for a sump pump system Nathan L. Tofte, Jonathan Christopher Hull, John Donovan 2025-04-01
12241471 Detecting and utilizing a rise rate for sump pump system control Nathan L. Tofte, Jonathan Christopher Hull, John Donovan 2025-03-04
12234826 Systems and methods for manipulating control of sump pumps to extend lifespans of sump pumps Nathan L. Tofte, Jonathan Christopher Hull, John Donovan 2025-02-25
12234827 Detecting and utilizing water vibrations in sump pump system control Nathan L. Tofte, Jonathan Christopher Hull, John Donovan 2025-02-25
12196335 Integrated water shut off valve control system John Donovan, Susan Roth, Julie K. Fritz 2025-01-14
12196211 Sump pump smart home integration Nathan L. Tofte, Jonathan Christopher Hull, John Donovan 2025-01-14