Inventor
ACKERMANN WALTER T
US19 patents
⚠️ This page may combine multiple inventors who share the name “ACKERMANN WALTER T”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
RISDON CORP
11 patentsUS5599124AFeb 4, 1997
Snap-together lipstick base and cartridge having snap locking means
RISDON CORP29 citations92
US5320116AJun 14, 1994
Cosmetic compact
RISDON CORP22 citations92
US5172993ADec 22, 1992
Lipstick case with resilient friction tab
RISDON CORP34 citations92
US5172992ADec 22, 1992
Mascara container with stirrer
RISDON CORP41 citations92
US4750501AJun 14, 1988
Cosmetic applicator with even torque and improved locking
RISDON CORP47 citations92
US5984552ANov 16, 1999
Locking lipstick container
RISDON CORP19 citations84
US5700100ADec 23, 1997
Mascara container having a stirrer and a separate wiper
RISDON CORP18 citations84
US5863144AJan 26, 1999
Sealed lipstick container
RISDON CORP7 citations73
US5324125AJun 28, 1994
Cosmetic applier comprising a container assembly and an insertable pomade cup assembly
RISDON CORP19 citations73
US5302042AApr 12, 1994
Anti-backoff lipstick container
RISDON CORP18 citations73
US5902061AMay 11, 1999
Lipstick container and method of making same
RISDON CORP3 citations63
ACKERMANN WALTER T
3 patentsUS4784591ANov 15, 1988
Die set and apparatus for in-situ molding of a separable fastener component
ACKERMANN WALTER T70 citations95
US4735753AApr 5, 1988
Method of making a fastener
ACKERMANN WALTER T86 citations95
US5357659AOct 25, 1994
Plastic article in situ molded to a porous substrate
ACKERMANN WALTER T39 citations91