LexDanaLexDanabeta
Inventor

David W. Haselden, Jr.

Inventor
Canon, GA, US

Overview

4→
Patents
2000–2016
Patent span
Mechanical engineering
Primary field (CPC F)

Patents· 4 as inventor

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

F15Bprimary
F15BSystems acting by means of fluids in general33%
Y10TTechnical subjects covered by former us classification25%
F16KValves17%
F16PSafety devices in general17%
G05BControl or regulating systems in general8%
PatentTitleYear
9,395,020'Two spool energy saver valve'20168,271,141'Control valve system with cycle monitoring, diagnostics and degradation prediction'20126,318,396'Double valve with anti-tiedown capability'20016,155,293'Double valve with anti-tiedown capability'2000

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2000–2016Patents assigned to ROSS OPERATING VALVE CO (4)· patent assignee history
2000–2001Based in Lavonia, GA, US· patent location history
2012–2016Patents assigned to HASELDEN JR DAVID W (2)· patent assignee history
2012Patents assigned to CUMMINGS ERIC O (1)· patent assignee history
2012Patents assigned to DIVELBISS DONALD S (1)· patent assignee history
2012–2016Based in Canon, GA, US· patent location history
2016Patents assigned to BENTO JOSÉ CARLOS (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
ROSS OPERATING VALVE CO42000–2016
HASELDEN JR DAVID Wself22012–2016
BENTO JOSÉ CARLOS12016
CUMMINGS ERIC O12012
DIVELBISS DONALD S12012
Locations
LocationPatentsSpan
Canon, Georgia, US22012–2016
Lavonia, Georgia, US22000–2001