Rutgerswerke Aktiengesellschaft
144Patents
0Active
144Granted
41Portfolio score
Filing activity: Nov 27, 1972 → Apr 10, 1995
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4918116A | High temperature resistant molding materials | Chemistry; Metallurgy | 133 | Expired |
| US5032629A | Epoxy hardening agents | Chemistry; Metallurgy | 50 | Expired |
| US4373038A | Asbestos-free friction material | Emerging Cross-Sectional Technologies | 45 | Expired |
| US4587291A | Multicomponent aqueous resole binder with extended processability time | Emerging Cross-Sectional Technologies | 32 | Expired |
| US5071951A | Epoxy hardening agents | Chemistry; Metallurgy | 30 | Expired |
| US5304237A | Chromium-free wood preservatives | Performing Operations; Transporting | 27 | Expired |
| US5525698A | Polymerizable epoxide mixtures and process | Performing Operations; Transporting | 26 | Expired |
| US4801404A | Boric acid compositions | Emerging Cross-Sectional Technologies | 25 | Expired |
| US5395913A | Polymerizable epoxide mixtures and process using Lewis base complexes | Performing Operations; Transporting | 24 | Expired |
| US4259171A | Process for the separation of quinoline-insoluble components from coal tar pitch | Chemistry; Metallurgy | 23 | Expired |
| US4629094A | Adhesive applicator | Fixed Constructions | 21 | Expired |
| US5262043A | Coal tar pitch and the preparation and use thereof | Chemistry; Metallurgy | 21 | Expired |
| US4595575A | Process for the continuous purification of waste gases with activated carbon | Performing Operations; Transporting | 20 | Expired |
| US4567272A | Pyrrole containing 2-aminonitropyridine derivatives | Chemistry; Metallurgy | 18 | Expired |
| US5436279A | Coating materials containing a reaction product of an epoxy novolak resin and an olefinically unsaturated carboxylic acid crosslinkable by radiation | Electricity | 17 | Expired |
| US4569971A | Hardeners for epoxy resins | Chemistry; Metallurgy | 16 | Expired |
| US5382608A | Binder mixtures containing reactive group containing lignin and novolaks | Textiles; Paper | 16 | Expired |
| US4942217A | Novel heat-hardenable binders phenol-formaldehyde+HMT+acid | Performing Operations; Transporting | 15 | Expired |
| US4477380A | Oxidation process of reactive aromatics with reactivation of the catalyst using potassium permanganate | Emerging Cross-Sectional Technologies | 14 | Expired |
| US5439863A | Neutral metal complex salts | Emerging Cross-Sectional Technologies | 14 | Expired |
| US5458978A | Epoxy resin systems containing glycidylated aromatic amines, phosphorus epoxies and metal salts | Emerging Cross-Sectional Technologies | 14 | Expired |
| US4795847A | Preparation of 2,6-dialkyl-naphthalenes | Chemistry; Metallurgy | 14 | Expired |
| US4425389A | Heat-applicable and hardenable sealing compositions and its use | Emerging Cross-Sectional Technologies | 13 | Expired |
| US5075155A | Novel prepregs | Emerging Cross-Sectional Technologies | 13 | Expired |
| US4659846A | Preparation of 2,5-diloweralkyl-1.4:3,6-dianhydrosorbitols | Chemistry; Metallurgy | 12 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.