Intellectual Property and Patents
G&H occupies a strong intellectual property (IP) position. We consider managing our IP maturely and intelligently as a fundamental business activity.
Our patents provide us great protective value, allow us to collect significant licenses, help us keep secure both our own business and that of our customers, and prevent our inventions from enabling our competitors.
G&H currently files and receives new patents at a rate between five and ten per year. We expect to keep that level constant. G&H has a proactive approach to creating new business focused inventions, a well-defined IP process for our invention disclosure and selection process, and significant incentive payments for our employee inventors.
We track of all our active patents and the portfolio of products to which they apply. The following is a list of patents that issued in the United States or the UK. No guarantee is made of completeness or that this list reflects the current status. For that, please consult the USPTO or the UKIPO sites.
Fiber and fiber laser technology
| US patent | Issue date | Inventors | Title |
| 9762020 | 2017-09-12 | Leontios Stampoulidis, Efstratios Kehayas | Bi-directionally pumped polarization maintaining fiber amplifier |
| GB2517223 | 2017-07-05 | Norman Fisher, Adrian Norman | Optical fiber device having mode stripper thermally protecting structural adhesive |
| 9372310 | 2016-06-21 | Tom Legg, Norman Fisher, Adrian Norman | Free space fibre-to-fibre coupling using optical fibres below cut-off |
| 9341920 | 2016-05-17 | Murray Reed, Robert Eckardt | Pulsed Fiber Laser Wavelength Convertor |
| 9116296 | 2015-08-25 | Norman Fisher, Adrian Norman | OPTICAL FIBER DEVICE HAVING MODE STRIPPER THERMALLY PROTECTING STRUCTURAL ADHESIVE |
| 8804787 | 2014-08-12 | Steven Colman, Alex Rosiewicz | NARROW LINEWIDTH SEMICONDUCTOR LASER |
| 8755112 | 2014-06-17 | Leontios Stampoulidis, Efstratios Kehayas | OPTICAL FIBER AMPLIFIER ARRAY |
| 8748805 | 2014-06-10 | Alex Rosiewicz | POLARIZATION DIVERSITY DETECTOR |
| 8317413 | 2012-11-27 | Norman Fisher, Toby Woodbridge, Anderw Rider | PACKAGING FOR FUSED FIBER DEVICES FOR HIGH POWER APPLICATIONS |
| 7580609 | 2009-08-25 | Chris Pannell | FIBER INTENSITY REDUCING DEVICES AND RELATED SYSTEMS |
| 7326915 | 2008-06-10 | Mikhail Kaluzhny, Alex Rosiewicz | WAVELENGTH STABILIZATION FOR BROADBAND LIGHT SOURCES |
| 7309175 | 2007-12-18 | Alex Rosiewicz, Ninghui Zhu, Michio Matsuki | REDUCING HEAT FROM NON-COUPLED LIGHT IN POWER TRANSMITTING OPTICAL FIBERS |
| 7297926 | 2007-11-20 | Mikhail Kaluzhny | COMPOUND EYE IMAGE SENSOR DESIGN |
| 6709169 | 2004-03-23 | Dave Rossi | THERMALLY AND MECHANICALLY STABLE LOW-COST HIGH THERMAL CONDUCTIVITYSTRUCTURE FOR SINGLE-MODE FIBER COUPLING TO LASER DIODE |
Acousto-optic technology
| US patent | Issue date | Inventors | Title |
| GB2534937 | 2017-09-06 | Matthew Francis, Christopher Pannell, Graham Glenn, Dariusz Zak, Robert Swain | Acousto-optic device |
| 9310631 | 2016-04-12 | Stefano Valle, Christopher Pannell, Jonathan Ward | Acoustic Absorber having a Roughened Surface for AO Devices |
| 8724209 | 2014-05-13 | Chris Pannell | ACOUSTO-OPTIC DEVICE WITH ELECTRODE HAVING DIFFERENT TRANSVERSE EDGE POSITIONS |
| 8514477 | 2013-08-20 | Bill Zhang, Chris Pannell | OPTICAL ARRANGEMENTS FOR IMAGING INCLUDING AN ACOUSTO-OPTIC TUNABLE FILTER AND AT LEAST ONE PETZVAL LENS COMBINATION |
| 7965437 | 2011-06-21 | David Lovering, Darren Chaney | INTEGRATED HIGH EFFICIENCY MULTISTAGE ACOUSTO-OPTIC MODULATOR |
| 7860135 | 2010-12-28 | Ron Dwelle | LOW LOSS CRYSTAL AS A LARGE APERTURE AO DEFLECTOR |
| 7684110 | 2010-03-23 | Chris Pannell | HIGH FREQUENCY ACOUSTO-OPTIC FREQUENCY SHIFTER HAVING WIDE ACCEPTANCE ANGLE |
| 7595929 | 2009-09-29 | Leslie Gordon, Ronald Dwelle, Jon Fowler | GROOVED BACKSIDE ACOUSTIC TERMINATION OF ACOUSTO-OPTIC DEVICES |
| 7580182 | 2009-08-25 | John Kump, Dieter Jundt | FREQUENCY SYNTHESIS FOR ACOUSTOOPTIC DEVICES |
| 7542495 | 2009-06-02 | Mike Draper | CORROSION RESISTANT COOLED ACOUSTO-OPTIC DEVICES |
| 7405512 | 2008-07-29 | Chris Pannell | ACOUSTIC TRANSDUCERS HAVING LOCALIZED FERROELECTRIC DOMAIN INVERTED REGIONS |
| 7385749 | 2008-06-10 | Chris Pannell, Tom Stenger, Jon Ward, Melvin Pedinoff, Ramesh Shori | SILICON ACOUSTO-OPTIC MODULATOR |
| 7142735 | 2006-11-28 | John Kump | ACOUSTO-OPTIC TUNABLE FILTER CONTROLLER |
| 7283290 | 2007-10-16 | Chris Pannell, Elliot Wachman | ACOUSTO-OPTIC DEVICES HAVING HIGHLY APODIZED ACOUSTIC FIELDS AND METHODS OF FORMING THE SAME |
| 6563844 | 2003-05-13 | Eddie H. Young, Bob Belfatto, Carlos Carbonell | HIGH LOSS MODULATION ACOUSTO-OPTIC Q-SWITCH FOR HIGH POWER MULTIMODE LASER |
| 6144482 | 2001-05-22 | Eddie H. Young, Huey-Chin Ho, Michael D. Case, Bob Belfatto | ACOUSTO-OPTIC MODULATOR FOR SELECTIVE EXTRACTION OF ONE OR MORE WAVELENGTHS FROM RANDOMLY POLARIZED POLYCHROMATIC LIGHT BEAM |
| 6236492 | 2001-05-22 | John Kump | ELECTRODE WITH A BALANCED CENTROID, SOFT EDGES AND AN APODIZATION RATIO GREATER THAN ONE |
| 6016216 | 2000-01-18 | I-Cheng Chang | POLARIZATION-IDEPENDENT ACOUSTO-OPTIC TUNABLE FILTER |
| 5909304 | 1999-06-01 | I-Cheng Chang | ACOUSTO-OPTIC TUNABLE FILTER BASED ON ISOTROPIC ACOUSTO-OPTIC DIFFRACTION USING PHASED-ARRAY TRANSDUCERS |
| 5742425 | 1998-04-21 | John Kump, Arron Campi | TECHNIQUE FOR ELECTRONICALLY STABILIZING THE OUPUTS OF ACOUSTOOPTIC DEVICES |
| 5712722 | 1998-01-27 | John Kump, Richard Coppock | DRIVER CIRCUIT FOR STABILIZING OPTICAL OUTPUTS OF ACOUSTOOPTIC DEVICES |
| 5576880 | 1996-11-19 | I-Cheng Chang | ACOUSTO-OPTIC BRAGG CELL |
Optical systems, packaging and integration
| US patent | Issue date | Inventors | Title |
| 9412005 | 2016-08-09 | Elliot Wachman, Joel Recht | Use of Error Image for Unmixing Artificial Removal in Linear Spectral Unmixing |
| 9356420 | 2016-05-31 | Trevor Cook, Michael Cox, Peter Mackay | Solid state laser with multiple cores coupled by fold optics |
| 9219343 | 2015-12-22 | Robert Dew, Carl Brunetta, Thomas Stenger, Gary Catella | CRYSTAL CAPTURE HOUSING WITH NON-CONTACT FLUID COOLING |
| 8110159 | 2012-02-07 | Elliot Wachman, Jill Wachman, Stanley J. Geyer | AOTF-BASED IMAGING SYSTEM AND METHOD FOR HYPERSPECTRAL AND MULTISPECTRAL IMAGING OF SPECIMENS INCLUDING MEDICAL TISSUE |
| 8022352 | 2011-09-20 | Mikhail Kaluzhny | FLEXIBLE SUBSTRATE WITH ETCHED LENS ARRAY |
| 7316904 | 2008-01-08 | Daniel L. Farkas, Elliot S. Wachman, Jill Wachman, Miriam Farkas, Stanley J. Geyer | AUTOMATED PAP SCREENING USING OPTICAL DETECTION OF HPV WITH OR WITHOUT MULTISPECTRAL IMAGING |
| 7160368 | 2007-01-09 | Suzanne Wakelin | SYSTEM AND METHOD FOR GETTERING GASPHASE CONTAMINANTS WITHIN A SEALED ENCLOSURE |
