Inventor

David Charles Winchester

Inventor

Walnutport, PA, US

Overview

6→

Patents

1991–2021

Patent span

Chemistry

Primary field (CPC C)

Patents· 6 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

C01Bprimary

C01BNon-metallic elements28%

B01DSeparation17%

Y02PClimate change mitigation technologies in the production or processing of goods17%

C03BManufacture, shaping, or supplementary processes11%

B02CCrushing, pulverising, or disintegrating in general6%

F25JLiquefaction, solidification or separation of gases or gaseous or liquefied gaseous mixtures by pressure and cold treatment or by bringing them into the supercritical state6%

H01JElectric discharge tubes or discharge lamps6%

Y02WClimate change mitigation technologies related to wastewater treatment or waste management6%

Y10TTechnical subjects covered by former us classification6%

PatentTitleYear

10,892,132System and method for xenon recovery2021 9,649,590'System and method for gas recovery and reuse'2017 8,591,634'Method and equipment for selectively collecting process effluent'2013 8,535,414'Recovering of xenon by adsorption process'2013 5,057,133'Thermally efficient melting and fuel reforming for glass making'1991 5,006,141'Thermally efficient melting for glass making'1991

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1991–2021Patents assigned to AIR PROD & CHEM (6)· patent assignee history

1991Based in Allentown, PA, US· patent location history

2013Patents assigned to BOSCO MATTHEW JOHN (2)· patent assignee history

2013Patents assigned to JOHNSON ANDREW DAVID (2)· patent assignee history

2013Patents assigned to KARWACKI JR EUGENE JOSEPH (2)· patent assignee history

2013–2021Based in Walnutport, PA, US· patent location history

2017–2021Patents assigned to VERSUM MAT US LLC (2)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
AIR PROD & CHEM	6	1991–2021
BOSCO MATTHEW JOHN	2	2013
JOHNSON ANDREW DAVID	2	2013
KARWACKI JR EUGENE JOSEPH	2	2013
VERSUM MAT US LLC	2	2017–2021

Locations

Location	Patents	Span
Walnutport, Pennsylvania, US	4	2013–2021
Allentown, Pennsylvania, US	2	1991