LJ Laboratories LLC
47Patents
0Active
47Granted
40Portfolio score
Filing activity: Jan 2, 1996 → Jun 3, 2002
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6271913A | Apparatus and method for measuring optical characteristics of an object | Physics | 133 | Expired |
| US5759030A | Method for determing optical characteristics of teeth | Human Necessities | 129 | Expired |
| US5880826A | Apparatus and method for measuring optical characteristics of teeth | Physics | 127 | Expired |
| US5745229A | Apparatus for determining optical characteristics of an object | Human Necessities | 119 | Expired |
| US6249340A | Apparatus and method for measuring optical characteristics of an object | Physics | 117 | Expired |
| US6246479A | Integrated spectrometer assembly and methods | Physics | 113 | Expired |
| US6373573B1 | Apparatus for measuring optical characteristics of a substrate and pigments applied thereto | Physics | 104 | Expired |
| US5956682A | Picture frame with associated audio messages and position sensitive or speech recognition device | Physics | 95 | Expired |
| US6118521A | Apparatus and method for measuring optical characteristics of an object | Human Necessities | 92 | Expired |
| US6249348A | Integrated spectrometer assembly and methods | Physics | 87 | Expired |
| US6519037B2 | Spectrometer having optical unit including a randomized fiber optic implement | Physics | 87 | Expired |
| US5883708A | Apparatus for measuring optical properties | Human Necessities | 83 | Expired |
| US5966205A | Method and apparatus for detecting and preventing counterfeiting | Human Necessities | 78 | Expired |
| US6040902A | Apparatus and method for measuring color | Human Necessities | 77 | Expired |
| US5926262A | Apparatus and method for measuring optical characteristics of an object | Physics | 76 | Expired |
| US5851113A | Apparatus and method for measuring the color of teeth | Human Necessities | 74 | Expired |
| US6246471A | Apparatus and method for measuring optical characteristics of an object | Physics | 72 | Expired |
| US6239868A | Apparatus and method for measuring optical characteristics of an object | Human Necessities | 69 | Expired |
| US6590660B2 | Apparatus and method for measuring optical characteristics of an object | Physics | 64 | Expired |
| US6038016A | Method and apparatus for detecting and preventing counterfeiting | Human Necessities | 62 | Expired |
| US6417917B1 | Apparatus and method for measuring optical characteristics of an object | Human Necessities | 62 | Expired |
| US6254385A | Apparatus and method for measuring optical characteristics of teeth | Human Necessities | 61 | Expired |
| US5871351A | Apparatus and method for measuring the color of teeth | Human Necessities | 59 | Expired |
| US6362888B1 | Spectrometer assembly | Physics | 53 | Expired |
| US6570654B2 | Apparatus and method for measuring optical characteristics of an object | Physics | 51 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.