Richard Hammar
45Patents
13h-index
30Co-inventors
81Inventor score
Filing activity: Apr 5, 1974 → Apr 26, 2011
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7004007B2 | Die cushion apparatus for hot stretch-forming | Emerging Cross-Sectional Technologies | 37 | Expired |
| US3933524A | Antimony plating of lead-acid storage batteries grids | Emerging Cross-Sectional Technologies | 32 | Expired |
| US7644750B2 | Method of casting components with inserts for noise reduction | Performing Operations; Transporting | 27 | Active |
| US6810709B2 | Heated metal forming tool | Emerging Cross-Sectional Technologies | 20 | Expired |
| USD430330S | Lighting fixture | General | 19 | Expired |
| US4221854A | Lightweight laminated grid for lead-acid storage batteries | Emerging Cross-Sectional Technologies | 19 | Expired |
| US7937819B2 | Method of manufacturing a friction damped disc brake rotor | Emerging Cross-Sectional Technologies | 18 | Active |
| US4308322A | Battery cell and electrolyte circulation pump | Emerging Cross-Sectional Technologies | 17 | Expired |
| US4342343A | Method of making a negative lead-acid storage battery plate | Emerging Cross-Sectional Technologies | 16 | Expired |
| US7159437B2 | Heated die for hot forming | Emerging Cross-Sectional Technologies | 16 | Expired |
| USD398069S | Chandelier | General | 15 | Expired |
| USD409783S | Chandelier | General | 14 | Expired |
| USD429835S | Chandelier | General | 14 | Expired |
| USD411029S | Chandelier | General | 13 | Expired |
| USD386281S | Chandelier | General | 13 | Expired |
| USD441118S | Chandelier | General | 11 | Expired |
| US4286362A | Lightweight laminated grid for lead acid-storage batteries | Emerging Cross-Sectional Technologies | 10 | Expired |
| USD410102S | Chandelier | General | 10 | Expired |
| USD350833S | Glass lamp shade | General | 9 | Expired |
| USD436212S | Lighting fixture | General | 8 | Expired |
| US8230713B2 | Elevated temperature forming die apparatus | Emerging Cross-Sectional Technologies | 7 | Active |
| US7204119B2 | Hollow metallic ring seal for press | Emerging Cross-Sectional Technologies | 7 | Expired |
| USD429836S | Lighting fixture | General | 6 | Expired |
| USD359141S | Chandelier | General | 6 | Expired |
| US4169192A | Lead-acid storage battery having Pb-Cd-Zn-Sn plate straps | Emerging Cross-Sectional Technologies | 6 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.