Boulder Scientific Company
45Patents
1Active
45Granted
33Portfolio score
Filing activity: Feb 15, 1989 → Jun 16, 2006 · 1 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6291699A | 2-alkyl-4-(2,6-dialkylphenyl) indenes | Emerging Cross-Sectional Technologies | 38 | Expired |
| US5789634A | Coupling reactions of 2-substituted, 7-haloindenes with aryl substituents to produce metallocene catalyst intermediates | Chemistry; Metallurgy | 32 | Expired |
| US5744656A | Conversion of hexafluorobenzene to bromopentafluorobenzene | Chemistry; Metallurgy | 31 | Expired |
| US5035365A | Thortveitite ore beneficiation process | Performing Operations; Transporting | 20 | Expired |
| US6465700B1 | Coupling reactions of 2-substituted, 7-haloindenes with aryl substituents to produce metallocene catalyst ligands | Chemistry; Metallurgy | 16 | Expired |
| US6175027A | Synthesis of bis (alkyl cyclopentadienyl) metallocenes | Chemistry; Metallurgy | 14 | Expired |
| US6075171A | 2-substituted 7-haloindenes and methods for synthesizing | Chemistry; Metallurgy | 12 | Expired |
| US6015916A | Constrained geometry metallocene catalyst complexes | Emerging Cross-Sectional Technologies | 8 | Expired |
| US5847176A | Preparation of chiral titanocenes | Emerging Cross-Sectional Technologies | 5 | Expired |
| US5877366A | Dicyclopentadiene cracking process | Chemistry; Metallurgy | 4 | Expired |
| US6231790A | Tetrakis-pentafluorophenyl borates from pentafluorophenyl grignard reagents | Emerging Cross-Sectional Technologies | 3 | Expired |
| US6180810A | Silyl amines | Chemistry; Metallurgy | 3 | Expired |
| US6218557A | Synthesis of titanocenes | Emerging Cross-Sectional Technologies | 3 | Expired |
| US5679289A | Method for the synthesis and use of pentafluorophenyl lithium to produce tetrakis pentafluorophenyl borate | Chemistry; Metallurgy | 3 | Expired |
| US5069821A | Stable sodium tetraphenylborate solutions | Electricity | 3 | Expired |
| US7834228B1 | Synthesis of mono-substituted cyclopentadienes | Chemistry; Metallurgy | 3 | Active |
| USRE36115E | Process for producing amine-boranes | General | 2 | Expired |
| US6087518A | Silylated and N-silylated compound synthesis | Chemistry; Metallurgy | 2 | Expired |
| US5866706A | Preparation and separation of RAC and MESO compound mixtures | Chemistry; Metallurgy | 2 | Expired |
| US5516909A | Process for producing amine-boranes | Chemistry; Metallurgy | 2 | Expired |
| US6531619B1 | Preparation of cyclopentadienyl or indenyl titanium trihalides | Emerging Cross-Sectional Technologies | 2 | Expired |
| US6441258B1 | Synthesis and isomerization of 1,2-bis (indenyl) ethanes | Chemistry; Metallurgy | 1 | Expired |
| US6096928A | Method for the production of tetrakis (pentafluorophenyl) borates | Chemistry; Metallurgy | 1 | Expired |
| US6407289B1 | Synthesis of N4, N4-diphenyl-N4,N4-di-m-tolyl-biphenyl-4,4'-diamine from an unsymmetrical amine | Chemistry; Metallurgy | 1 | Expired |
| US6642402B2 | Synthesis of bis (cyclopentadienyl) and bis (indenyl) ruthenium complexes | Chemistry; Metallurgy | 1 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.