Inventor
Charles W. Clark
Inventor
Wheaton, MD, US
Overview
Patents· 9 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
B66Dprimary
B66DCapstans25%
B01DSeparation17%
E04GScaffolding8%
E06CLadders8%
G01TMeasurement of nuclear or x-radiation8%
H01JElectric discharge tubes or discharge lamps8%
H03FAmplifiers8%
H04BTransmission8%
Y10TTechnical subjects covered by former us classification8%
PatentTitleYear
8,816,296'Noble-gas-excimer detectors of slow neutrons'20147,791,045'Apparatus and method for detecting slow neutrons by lyman alpha radiation'20106,575,268'Ladder scaffolding support apparatus and scaffolding system'20034,734,579'Ultrasensitive method for measuring isotope abundance ratios'19884,634,864'Ultrasensitive method for measuring isotope abundance ratios'19874,625,946'Hoist having worm safety device'19864,518,153'Safety mechanism for hoisting drums'19854,493,479'Hoist drive safety system'19853,953,808'Solid state amplifier'1976Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1976Patents assigned to BELL TELEPHONE LABOR INC (1)· patent assignee history
1985–1986Patents assigned to EDERER INC (3)· patent assignee history
1985–1986Based in King County, WA, US· patent location history
1987–1988Patents assigned to ATOM SCIENCES INC (2)· patent assignee history
1987Based in Gaithersburg, MD, US· patent location history
1988Based in Montgomery, MD, US· patent location history
2003Based in Gainesville, GA, US· patent location history
2010–2014Based in Wheaton, MD, US· patent location history
2014Patents assigned to CLARK CHARLES W (1)· patent assignee history
2014Patents assigned to COPLAN MICHAEL ALAN (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| EDERER INC | 3 | 1985–1986 |
| ATOM SCIENCES INC | 2 | 1987–1988 |
| BELL TELEPHONE LABOR INC | 1 | 1976 |
| CLARK CHARLES Wself | 1 | 2014 |
| COPLAN MICHAEL ALAN | 1 | 2014 |
Locations
| Location | Patents | Span |
|---|---|---|
| Wheaton, Maryland, US | 2 | 2010–2014 |
| King County, Washington, US | 2 | 1985–1986 |
| Gainesville, Georgia, US | 1 | 2003 |
| Montgomery, Maryland, US | 1 | 1988 |
| Gaithersburg, Maryland, US | 1 | 1987 |