Inventor

John Howells

Inventor

West Linn, OR, US

Overview

9→

Patents

1979–2004

Patent span

Electricity

Primary field (CPC H)

Patents· 9 as inventor

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

H10Pprimary

H10PGeneric processes or apparatus for the manufacture or treatment of devices covered by class h1029%

G01NInvestigating or analysing materials by determining their chemical or physical properties21%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests21%

B65FGathering or removal of domestic or like refuse14%

B65DContainers for storage or transport of articles or materials, e.g. bags, barrels, bottles, boxes, cans, cartons, crates, drums, jars, tanks, hoppers, forwarding containers7%

Y02WClimate change mitigation technologies related to wastewater treatment or waste management7%

PatentTitleYear

6,816,251'Method and apparatus for detecting defects along the edge of electronic media'2004 6,566,673'Method and apparatus for detecting defects along the edge of electronic media'2003 6,545,752'Method and apparatus for detecting defects along the edge of electronic media'2003 6,183,186'Wafer handling system and method'2001 6,152,680'Wafer cassette rotation mechanism'2000 6,053,668'Water slide for transferring semiconductor wafers'2000 5,915,910'Semiconductor wafer transfer method and apparatus'1999 4,425,070'Separated discards carrier'1984 4,161,252'Set of sorting-stacking bins'1979

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1979Patents assigned to RECYCLING AND CONSERVATION INC (1)· patent assignee history

1979–1984Based in Kittery, ME, US· patent location history

1984Patents assigned to RECYCLING & CONSERVATION INC (1)· patent assignee history

1999–2004Patents assigned to DAITRON INC (7)· patent assignee history

1999–2001Based in West Linn, OR, US· patent location history

2003–2004Based in Redmond, OR, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
DAITRON INC	7	1999–2004
RECYCLING & CONSERVATION INC	1	1984
RECYCLING AND CONSERVATION INC	1	1979

Locations

Location	Patents	Span
West Linn, OR, US	4	1999–2001
Redmond, OR, US	3	2003–2004
Kittery, ME, US	2	1979–1984