Issued Patents All Time
Showing 25 most recent of 41 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D987127 | Candle holder with pattern | — | 2023-05-23 |
| D975949 | Scrubbing handle | — | 2023-01-17 |
| D974144 | Handle | — | 2023-01-03 |
| 10806342 | Determination of continuous dynamic corneal viscoelastic bending moduli | — | 2020-10-20 |
| 9320430 | Ophthalmic diagnostic instrument and method | — | 2016-04-26 |
| 9289124 | Tonometer calibration tool | Russell Bonaventura, David G. Kelkenberg, David L. Beverly, Donald E. Miller | 2016-03-22 |
| 8800347 | Tonometer calibration tool | Russell Bonaventura, David G. Kelkenberg, David L. Beverly, Donald E. Miller | 2014-08-12 |
| 8613704 | Subsystems and methods for non-contact corneal deformation | — | 2013-12-24 |
| 7909765 | Method and apparatus for determining true intraocular pressure | — | 2011-03-22 |
| 7798962 | Method and apparatus for measuring corneal resistance | — | 2010-09-21 |
| 7771353 | Method and apparatus for tear film measurement | — | 2010-08-10 |
| 7481767 | Method and apparatus for determining true intraocular pressure | — | 2009-01-27 |
| 7004902 | Method and apparatus for measuring biomechanical characteristics of corneal tissue | — | 2006-02-28 |
| 6875175 | Duel mode non-contact tonometer | — | 2005-04-05 |
| 6817981 | Method for eliminating error in tonometric measurements | — | 2004-11-16 |
| 6726625 | Non-contact tonometer having improved air pump | — | 2004-04-27 |
| 6679842 | Tonometer calibration tool | — | 2004-01-20 |
| 6623429 | Hand-held non-contact tonometer | Christopher Percival, Douglas H. Hoover | 2003-09-23 |
| 6616609 | Method for optimizing piston diameter in a non-contact tonometer, and non-contact tonometer having fluid pump designed by said method | Bruce Siskowski | 2003-09-09 |
| 6419631 | Non-contact tonometry method | — | 2002-07-16 |
| 6159148 | Non-contact tonometer having non-linear pressure ramp | — | 2000-12-12 |
| 6042232 | Automatic optometer evaluation method using data over a wide range of focusing positions | Matthew L. Severns | 2000-03-28 |
| 5984476 | Ophthalmic instrument having self-calibrating optical system | Douglas H. Hoover | 1999-11-16 |
| 5954645 | Applanation detection system for a non-contact tonometer | — | 1999-09-21 |
| 5825457 | Keratometric illumination system | Joseph Zelvin | 1998-10-20 |