John Borkenhagen — 9 Patents at IBM

John Borkenhagen has been granted 9 US patents while listed as an inventor at IBM. The first was granted in 2019 and the most recent in October 2025. John Borkenhagen ranks #535,341 of 4,157,543 US inventors in our database (top 12.9%). Patent records list John Borkenhagen in Rochester, MN, US.

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Showing 1–9 of 9 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
12438547	Phase-locked loop update cancellation	Christopher W. Steffen, Grant P. Kesselring, James D. Strom	2025-10-07
12308847	Dual loop charge pump for enhanced reliability and power consumption	James D. Strom, Ann Wu, Rashmi R. Bindu	2025-05-20
11714127	On-chip spread spectrum characterization	Christopher W. Steffen	2023-08-01	$14,809,000
11693446	On-chip spread spectrum synchronization between spread spectrum sources	Christopher W. Steffen, Grant P. Kesselring	2023-07-04
11558057	Phase locked loop pulse truncation	Grant P. Kesselring, James D. Strom, Christopher W. Steffen	2023-01-17	$4,393,000
11527953	Higher yielding improved matching reference circuit especially applicable for high speed mixed signal applications and phase locked loops and charge pumps	James D. Strom, Ann Wu, Erik Unterborn, Grant P. Kesselring	2022-12-13	$8,590,000
11496094	Voltage-controlled oscillator with centertap bias	James D. Strom, Herschel A. Ainspan, Andrew D. Davies	2022-11-08	$10,347,000
11146307	Detecting distortion in spread spectrum signals	Christopher W. Steffen, Grant P. Kesselring	2021-10-12	$3,967,000
10505553	Detecting the health of a phase loop lock	Christopher W. Steffen	2019-12-10	$5,388,000

John Borkenhagen — 9 Patents

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