Inventor
Joseph E. Ahnell
Inventor
Hydes, MD, US
Overview
Patents· 7 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C12Mprimary
C12MApparatus for enzymology or microbiology38%
C12QMeasuring or testing processes involving enzymes, nucleic acids or microorganisms31%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests25%
Y10TTechnical subjects covered by former us classification6%
PatentTitleYear
5,155,019'Detection of the presence of biological activity in a sealed container utilizing infrared analysis of carbon dioxide and apparatus therefor'19924,971,900'Method for the detection of biologically active agents'19904,321,322'Pulsed voltammetric detection of microorganisms'19824,220,715'Apparatus for and method of detection of significant bacteriuria in urine samples through measurement of head space gas oxygen consumption in a closed-vial system'19804,182,656'Method for detecting the presence of biologically active agents utilizing .sup.13 C-labeled substrates'19804,152,213'Vacuum detection of bacteria'19794,073,691'Method for detecting the presence of biologically active agents'1978Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1978–1980Patents assigned to JOHNSTON LAB INC (4)· patent assignee history
1978–1980Based in Baltimore, MD, US· patent location history
1979–1992Based in Hydes, MD, US· patent location history
1982Patents assigned to AHNELL JOSEPH E (1)· patent assignee history
1990–1992Patents assigned to BECTON DICKINSON CO (2)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| JOHNSTON LAB INC | 4 | 1978–1980 |
| BECTON DICKINSON CO | 2 | 1990–1992 |
| AHNELL JOSEPH Eself | 1 | 1982 |
Locations
| Location | Patents | Span |
|---|---|---|
| Hydes, Maryland, US | 5 | 1979–1992 |
| Baltimore, Maryland, US | 2 | 1978–1980 |