Walter T. Ackermann
25Patents
13h-index
10Co-inventors
78Inventor score
Filing activity: Jun 7, 1976 → Jun 9, 2004
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4735753A | Method of making a fastener | Emerging Cross-Sectional Technologies | 53 | Expired |
| US4784591A | Die set and apparatus for in-situ molding of a separable fastener component | Performing Operations; Transporting | 42 | Expired |
| US5102249A | Lipstick dispenser for shaped pomades | Human Necessities | 31 | Expired |
| US5172992A | Mascara container with stirrer | Performing Operations; Transporting | 28 | Expired |
| US5186561A | Incremental feel cosmetic dispenser | Human Necessities | 27 | Expired |
| US4750501A | Cosmetic applicator with even torque and improved locking | Human Necessities | 27 | Expired |
| US5324126A | Cosmetic dispenser with long lasting swivel drag effect | Human Necessities | 26 | Expired |
| US5599124A | Snap-together lipstick base and cartridge having snap locking means | Human Necessities | 24 | Expired |
| US5357659A | Plastic article in situ molded to a porous substrate | Emerging Cross-Sectional Technologies | 24 | Expired |
| US5172993A | Lipstick case with resilient friction tab | Human Necessities | 20 | Expired |
| US5320116A | Cosmetic compact | Human Necessities | 18 | Expired |
| US4770556A | Lipstick case | Human Necessities | 17 | Expired |
| US6776311B2 | Dispenser assembly for a fragrance or personal care bottle and a method of assembling same | Performing Operations; Transporting | 13 | Expired |
| US4055876A | Slider for invisible-type slide fastener | Emerging Cross-Sectional Technologies | 13 | Expired |
| US6935540B2 | Dispenser assembly for a fragrance or personal care bottle and a method of assembling same | Performing Operations; Transporting | 13 | Expired |
| US5700100A | Mascara container having a stirrer and a separate wiper | Human Necessities | 11 | Expired |
| US5324125A | Cosmetic applier comprising a container assembly and an insertable pomade cup assembly | Human Necessities | 9 | Expired |
| US5984552A | Locking lipstick container | Human Necessities | 8 | Expired |
| US5302042A | Anti-backoff lipstick container | Human Necessities | 8 | Expired |
| US4825516A | Snap fastener construction | Emerging Cross-Sectional Technologies | 7 | Expired |
| US5863144A | Sealed lipstick container | Human Necessities | 6 | Expired |
| US5975781A | Lipstick and method for making same | Human Necessities | 3 | Expired |
| US6189969A | Vehicle seat adapted to protect occupant from injury in rear end collision | Performing Operations; Transporting | 3 | Expired |
| US5902061A | Lipstick container and method of making same | Human Necessities | 2 | Expired |
| US4449258A | Water-closet with rotary double pan | Fixed Constructions | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.