RT

Richard Jan Tjaden

SF State Farm: 15 patents #170 of 1,137Top 15%
📍 Bloomington, IL: #84 of 606 inventorsTop 15%
🗺 Illinois: #5,606 of 84,256 inventorsTop 7%
Overall (All Time): #304,057 of 4,157,543Top 8%
15
Patents All Time

Issued Patents All Time

Showing 1–15 of 15 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
12234827 Detecting and utilizing water vibrations in sump pump system control Nathan L. Tofte, Jonathan Christopher Hull, John Donovan 2025-02-25
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
12196211 Sump pump smart home integration Nathan L. Tofte, Jonathan Christopher Hull, John Donovan 2025-01-14
12196335 Integrated water shut off valve control system John Donovan, Susan Roth, Julie K. Fritz 2025-01-14
12055146 Adaptive learning system for improving sump pump control Nathan L. Tofte, Jonathan Christopher Hull, John Donovan 2024-08-06
11988214 Determining and utilizing a desired frequency for a mechanical shaker for a sump pump system Nathan L. Tofte, Jonathan Christopher Hull, John Donovan 2024-05-21
11859620 Detecting and utilizing water vibrations in sump pump system control Nathan L. Tofte, Jonathan Christopher Hull, John Donovan 2024-01-02
11788535 Systems and methods for manipulating control of sump pumps to extend lifespans of sump pumps Nathan L. Tofte, Jonathan Christopher Hull, John Donovan 2023-10-17
11773856 Detecting and utilizing a rise rate for sump pump system control Nathan L. Tofte, Jonathan Christopher Hull, John Donovan 2023-10-03
11761447 Adaptive learning system for improving sump pump control Nathan L. Tofte, Jonathan Christopher Hull, John Donovan 2023-09-19
11635080 Determining and utilizing a desired frequency for a mechanical shaker for a sump pump system Nathan L. Tofte, Jonathan Christopher Hull, John Donovan 2023-04-25
10113291 Sump system with overflow protection 2018-10-30