Inventor
William A. Frey
Inventor
Wilmington, DE, US
Overview
Patents· 8 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G01Nprimary
G01NInvestigating or analysing materials by determining their chemical or physical properties30%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests26%
C12QMeasuring or testing processes involving enzymes, nucleic acids or microorganisms9%
C07CAcyclic or carbocyclic compounds4%
C07HSugars4%
C10LFuels not otherwise provided for4%
D21CProduction of cellulose by removing non-cellulose substances from cellulose-containing materials4%
D21HPulp compositions4%
F23GCremation furnaces4%
Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution4%
PatentTitleYear
10,118,883Method for producing levulinic acid from lignocellulosic biomass20184,812,396'Method for detecting enzymatic activity using particle agglutination'19894,812,395'Method for detecting enzymatic activity using particle agglutination'19894,581,337'Polyether polyamines as linking agents for particle reagents useful in immunoassays'19864,480,042'Covalently bonded high refractive index particle reagents and their use in light scattering immunoassays'19844,477,346'Method for the removal of interfering substances in theophylline assays'19844,460,695'Method for the removal of interfering substances, including caffeine, in theophylline assays'19844,401,765'Covalently bonded high refractive index particle reagents and their use in light scattering immunoassays'1983Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1983–1989Patents assigned to DU PONT (7)· patent assignee history
1983–1989Based in Wilmington, DE, US· patent location history
1989Based in Hockessin, DE, US· patent location history
2018Patents assigned to GEORGIA PACIFIC LLC (1)· patent assignee history
2018Based in Atlanta, GA, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| DU PONT | 7 | 1983–1989 |
| GEORGIA PACIFIC LLC | 1 | 2018 |
Locations
| Location | Patents | Span |
|---|---|---|
| Wilmington, Delaware, US | 6 | 1983–1989 |
| Atlanta, Georgia, US | 1 | 2018 |
| Hockessin, Delaware, US | 1 | 1989 |