Inventor
Andrew J. Woytek
Inventor
Allentown, PA, US
Overview
Patents· 9 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C01Bprimary
C01BNon-metallic elements18%
B22DCasting of metals9%
C22BProduction and refining of metals9%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests9%
Y10TTechnical subjects covered by former us classification9%
B01DSeparation5%
B01JChemical or physical processes, e.g. catalysis or colloid chemistry5%
C01FCompounds of the metals beryllium, magnesium, aluminium, calcium, strontium, barium, radium, thorium, or of the rare-earth metals5%
C01GCompounds containing metals not covered by subclasses c01d or c01f5%
C07DHeterocyclic compounds5%
PatentTitleYear
6,521,018'Blanketing metals and alloys at elevated temperatures with gases having reduced global warming potential'20036,398,844'Blanketing molten nonferrous metals and alloys with gases having reduced global warming potential'20026,365,246'Package for safe storage of electrophilic fluorinating agent'20025,637,285'Process for nitrogen trifluoride synthesis'19975,569,151'Handling and delivery system for dangerous gases'19964,983,373'Process for the production of high purity zirconium tetrafluoride and other fluorides'19914,446,920'Method and apparatus for perforating or cutting with a solid fueled gas mixture'19844,156,598'Purification of nitrogen trifluoride atmospheres'19794,091,081'Preparation of nitrogen trifluoride'1978Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1978–2003Patents assigned to AIR PROD & CHEM (9)· patent assignee history
1978–2003Based in Allentown, PA, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| AIR PROD & CHEM | 9 | 1978–2003 |
Locations
| Location | Patents | Span |
|---|---|---|
| Allentown, Pennsylvania, US | 9 | 1978–2003 |