Christopher Walden — 9 Patents at Waters Technologies

Christopher Walden has been granted 9 US patents while listed as an inventor at Waters Technologies. The first was granted in 2016 and the most recent in July 2025. Christopher Walden ranks #535,341 of 4,157,543 US inventors in our database (top 12.9%). Patent records list Christopher Walden in Framingham, MA, US.

Issued Patents All Time

Showing 1–9 of 9 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
12372501	Gradient proportioning valve	Timothy M. Raymond, Sean Eric Anderson	2025-07-29
12066117	Check valve having a spherical loading element	—	2024-08-20	$126,404,000
11940424	Gradient proportioning valve	Timothy M. Raymond, Sean Eric Anderson	2024-03-26	$41,873,000
11821881	Passive dampening gradient proportioning valve	Timothy M. Raymond, Sean Eric Anderson	2023-11-21	$21,778,000
11821880	Active dampening gradient proportioning valve	Timothy M. Raymond, Sean Eric Anderson	2023-11-21	$21,778,000
10751247	Compensation for deflection in an automated cardiopulmonary compression device	Daniel William Jordan, III, Paul Aelen, Virginia Higley, Tyler Douglas Smith, Steve Frankovich +1 more	2020-08-25	$2,164,000
10517793	Cardiopulmonary compression device receiving flip-up legs	Virginia Higley, Michael A. Knipfer, Ahmed Reda, Mark Payne, John E. Olson +2 more	2019-12-31	$809,000
10426697	Compact electro-mechanical chest compression drive	Virginia Higley, Tyler Douglas Smith, Steven Joseph Frankovich, Daniel C. Canfield	2019-10-01	$851,000
9305437	Heuristics for media dispensing in automated teller machines (ATMs)	Mark Anthony KOOPMAN	2016-04-05

Christopher Walden — 9 Patents

Issued Patents All Time

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