Inventor
Douglas S. Bailey
Inventor
Deerfield, IL, US
Overview
Patents· 8 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G01Mprimary
G01MTesting static or dynamic balance of machines or structures31%
G08BSignalling systems, e.g. personal calling systems23%
G01NInvestigating or analysing materials by determining their chemical or physical properties15%
D07BRopes or cables in general8%
G06QInformation and communication technology [ict] specially adapted for administrative, commercial, financial, managerial or supervisory purposes8%
G07BTicket-issuing apparatus8%
G07FCoin-freed or like apparatus8%
PatentTitleYear
8,049,638'Sensor for detecting hydrocarbons'20117,673,865'Presentation instrument distribution systems and methods'20107,525,444'Sensor for detecting hydrocarbons'20096,817,518'Systems for preparing presentation instruments for distribution'20045,410,255'Method and apparatus for detecting and distinguishing leaks using reflectometry and conductivity tests'19955,355,720'Corrosion resistant cable'19945,334,970'Alarm system'19944,797,621'Leak detector and locator utilizing time domain reflectometry and sampling techniques'1989Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1989–1994Patents assigned to MIDWESCO INC (2)· patent assignee history
1989–2011Based in Deerfield, IL, US· patent location history
1994–2011Patents assigned to PERMA PIPE INC (4)· patent assignee history
2004–2010Patents assigned to FIRST DATA CORP (2)· patent assignee history
2004–2010Based in Omaha, NE, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| PERMA PIPE INC | 4 | 1994–2011 |
| FIRST DATA CORP | 2 | 2004–2010 |
| MIDWESCO INC | 2 | 1989–1994 |
Locations
| Location | Patents | Span |
|---|---|---|
| Deerfield, Illinois, US | 6 | 1989–2011 |
| Omaha, NE, US | 2 | 2004–2010 |