Daniel L. Kessler
21Patents
6h-index
12Co-inventors
62Inventor score
Filing activity: Jun 30, 2010 → Dec 1, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| USD796749S1 | Ultrasonic cleaner | General | 19 | Active |
| USD634271S1 | Charging stand for instruments for testing the authenticity of diamonds and moissanite | General | 18 | Expired |
| US8564316B2 | Gem tester | Physics | 15 | Active |
| US8749253B2 | Gem tester | Physics | 12 | Active |
| US9395350B2 | Gem tester | Physics | 10 | Active |
| USD771881S1 | Jewelry cleaner | General | 8 | Active |
| USD643163S1 | Jewelry cleaner | General | 6 | Expired |
| USD823368S1 | Magnifying device | General | 4 | Active |
| USD810368S1 | Jewelry cleaning applicator | General | 4 | Active |
| US11215844B2 | Modular production line for the production of ophthalmic lenses | Performing Operations; Transporting | 2 | Active |
| US9134263B2 | Gem tester | Physics | 2 | Active |
| US10001466B2 | Magnifying device for jewelry and system for use of same | Physics | 1 | Active |
| US10352868B2 | Grading lamp for gemstones | Physics | 1 | Active |
| US9285357B2 | Gem tester | Physics | 1 | Active |
| US11745452B2 | Modular production line for the production of ophthalmic lenses | Performing Operations; Transporting | 0 | Active |
| US10591747B2 | Contact lens inspection method and system | Physics | 0 | Active |
| US11499888B2 | Lens inspection module | Physics | 0 | Active |
| USD798172S1 | Grading lamp | General | 0 | Active |
| US9874491B2 | Cuvette system and methods for the inspection of ophthalmic lenses | Physics | 0 | Active |
| USD857535S1 | Grip for a gem tester | General | 0 | Active |
| USD731328S1 | Desktop apparatus for testing precious metal | General | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.