William E. Leistner
23Patents
7h-index
18Co-inventors
62Inventor score
Filing activity: Jun 21, 1976 → Jul 6, 1994
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5166355A | Process for preparing substituted 2,2'-methylene-bis-[6-(2H-benzotriazol-2-yl)-4-hydrocarbyl-phenols] | Chemistry; Metallurgy | 59 | Expired |
| US5237071A | Process for preparing 2,2'-methylene-bis(6-(2H-benzotriazol-2-yl)-4-hydrocarbyl phenols) | Chemistry; Metallurgy | 52 | Expired |
| US5362881A | Coupled benzotriazole and benzophenone UV absorbers | Chemistry; Metallurgy | 14 | Expired |
| US4529760A | Oligomers of 2,2,6,6-tetramethylpiperidinol polycarboxylic acid esters and synthetic polymer compositions | Chemistry; Metallurgy | 12 | Expired |
| US5292890A | Asymmetrical benzotriazolylphenols | Chemistry; Metallurgy | 11 | Expired |
| US4381360A | 1,3-Dicarbonyl compounds and polyvinyl halide resin compositions containing the same | Chemistry; Metallurgy | 9 | Expired |
| US5360850A | Asymmetrical benzotriazolylphenols | Chemistry; Metallurgy | 9 | Expired |
| US4692485A | Vinyl benzyl 2,2,6,6-tetramethyl piperidines | Chemistry; Metallurgy | 7 | Expired |
| US4104217A | Carbonate ester stabilizers for polymers | Chemistry; Metallurgy | 7 | Expired |
| US4371651A | Stabilizer compositions and polyvinyl halide resin compositions containing 1,3-dicarbonyl compounds | Chemistry; Metallurgy | 6 | Expired |
| US4460725A | Polyethers containing 2,2,6,6-tetramethyl piperidinyl carboxylic acid ester groups and synthetic resin compositions | Chemistry; Metallurgy | 5 | Expired |
| US4450248A | Hindered piperidyl light stabilizers | Chemistry; Metallurgy | 5 | Expired |
| US4463112A | Phenylethylidene-substituted phenyl polyphosphites | Chemistry; Metallurgy | 4 | Expired |
| US4346025A | Stabilized vinyl chloride polymer comprising a phenylethylidene aryl phosphite | Chemistry; Metallurgy | 4 | Expired |
| US4052427A | Process for the preparation of dialkyltin dihalides | Chemistry; Metallurgy | 3 | Expired |
| US4257927A | Inorganic organic coester stabilizers | Chemistry; Metallurgy | 2 | Expired |
| US5373037A | Coupled benzotriazole and benzophenone UV absorbers | Chemistry; Metallurgy | 2 | Expired |
| US4146517A | Inorganic and organic acid coester stabilizers | Chemistry; Metallurgy | 2 | Expired |
| US5262541A | Fluorenol catalyzed reduction of o-nitroazobenzenes and 2-aryl-2H-benzotriazole-N-oxides | Chemistry; Metallurgy | 2 | Expired |
| US4767834A | Vinyl benzyl 2,2,6,6-tetramethyl piperidines | Chemistry; Metallurgy | 1 | Expired |
| US4174297A | Polyhydric phenol coester stabilizers | Chemistry; Metallurgy | 1 | Expired |
| US5466819A | Coupled benzotriazole and benzophenone UV absorbers | Chemistry; Metallurgy | 1 | Expired |
| US4233414A | Polyhydric phenol coester stabilizers | Chemistry; Metallurgy | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.