Sigma-Aldrich Co. LLC
144Patents
99Active
144Granted
55Portfolio score
Filing activity: Jun 2, 1995 → Jun 16, 2021 · 44 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5868361A | Support system having an interchangeable splice | Emerging Cross-Sectional Technologies | 1,012 | Expired |
| US7427678B2 | Method for immobilizing oligonucleotides employing the cycloaddition bioconjugation method | Chemistry; Metallurgy | 123 | Expired |
| US10266851B2 | Using programmable DNA binding proteins to enhance targeted genome modification | Chemistry; Metallurgy | 96 | Active |
| US7972828B2 | Stabilized compositions of thermostable DNA polymerase and anionic or zwitterionic detergent | Chemistry; Metallurgy | 85 | Active |
| US5961081A | Cable support having pivotally and slidable retainer | Electricity | 83 | Expired |
| US6065612A | Relay rack with two-way opening door frame | Electricity | 71 | Expired |
| US5819956A | Rack for electrical equipment | Electricity | 59 | Expired |
| US5730400A | Cable tray cover system | Electricity | 48 | Expired |
| US7897376B2 | Method for extracting a target product from a host cell employing zwitterionic detergent combinations | Chemistry; Metallurgy | 39 | Active |
| US5792993A | Wireway sealing device | Electricity | 39 | Expired |
| US10731181B2 | CRISPR-based genome modification and regulation | Emerging Cross-Sectional Technologies | 30 | Active |
| US7214484B2 | Compositions and methods for nucleic acid extraction from biological samples | Chemistry; Metallurgy | 30 | Expired |
| US5720567A | Cable tray system | Emerging Cross-Sectional Technologies | 28 | Expired |
| US10745716B2 | CRISPR-based genome modification and regulation | Emerging Cross-Sectional Technologies | 28 | Active |
| US5848770A | Clevis hanger | Mechanical Engineering; Lighting; Heating | 27 | Expired |
| USRE36681E | Channel nut fastener | General | 25 | Expired |
| US7419698B2 | Precursors for chemical vapor deposition | Chemistry; Metallurgy | 24 | Expired |
| US6942964B1 | Tracer reagents that enhance reaction-product analysis | Chemistry; Metallurgy | 20 | Expired |
| US5985582A | Thrombin-based assay for antithrombin III | Physics | 19 | Expired |
| US5924655A | Clevis hanger | Mechanical Engineering; Lighting; Heating | 17 | Expired |
| US9206404B2 | Method of deleting an IgM gene in an isolated rat cell | Chemistry; Metallurgy | 17 | Active |
| US7169584B2 | Tracer reagents that enhance reaction-product analysis | Chemistry; Metallurgy | 17 | Expired |
| US9175023B2 | Molybdenum allyl complexes and use thereof in thin film deposition | Chemistry; Metallurgy | 17 | Active |
| US8039062B2 | Methods of atomic layer deposition using hafnium and zirconium-based precursors | Chemistry; Metallurgy | 15 | Active |
| USD962282S1 | Display screen or portion thereof with graphical user interface | General | 14 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.