John J. Prusak
22Patents
7h-index
6Co-inventors
54Inventor score
Filing activity: Sep 22, 1980 → Dec 5, 1984
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4463849A | Video disc caddy | Physics | 63 | Expired |
| US4503806A | Lubricant detector and measuring device | Physics | 35 | Expired |
| US4316281A | Spacer for stacked recorded discs | Physics | 23 | Expired |
| US4341613A | Apparatus for electroforming | Emerging Cross-Sectional Technologies | 23 | Expired |
| US4327830A | Record stamper protector | Performing Operations; Transporting | 14 | Expired |
| US4465453A | Apparatus for manufacturing disc record package | Emerging Cross-Sectional Technologies | 13 | Expired |
| US4385978A | Cathode head | Emerging Cross-Sectional Technologies | 11 | Expired |
| US4522659A | Method and apparatus for the manufacture of record stampers | Emerging Cross-Sectional Technologies | 7 | Expired |
| US4475966A | Method and apparatus for manufacturing video disc caddy | Emerging Cross-Sectional Technologies | 6 | Expired |
| US4470795A | Apparatus for manufacturing a disc record package | Emerging Cross-Sectional Technologies | 5 | Expired |
| US4414167A | Method for molding an article | Emerging Cross-Sectional Technologies | 5 | Expired |
| US4478566A | Apparatus for injection molding an article | Emerging Cross-Sectional Technologies | 4 | Expired |
| US4309265A | Cathode mask knob | Chemistry; Metallurgy | 4 | Expired |
| US4402660A | Apparatus for producing disc records with a molded-in center hole | Emerging Cross-Sectional Technologies | 4 | Expired |
| US4516301A | Method and apparatus for removing flash from a molded recorded disc | Emerging Cross-Sectional Technologies | 3 | Expired |
| US4512455A | Disc turnover device | Performing Operations; Transporting | 3 | Expired |
| US4362492A | Apparatus for compression molding recorded discs | Emerging Cross-Sectional Technologies | 3 | Expired |
| US4479853A | Method for the manufacture of record stampers | Chemistry; Metallurgy | 2 | Expired |
| US4435922A | Apparatus for grinding the back surfaces of record molding stampers | Emerging Cross-Sectional Technologies | 2 | Expired |
| US4400245A | Matrixing process for the manufacture of molded records | Chemistry; Metallurgy | 1 | Expired |
| US4534844A | Electroforming apparatus | Chemistry; Metallurgy | 1 | Expired |
| US4436603A | Apparatus for separating a replica from a matrix | Chemistry; Metallurgy | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.