Inventor
Ernest Eisenhardt Bergmann
Inventor
Fountain Hill, PA, US
Overview
Patents· 61 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G02Bprimary
G02BOptical elements, systems or apparatus43%
G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein17%
H04BTransmission10%
H01SDevices using the process of light amplification by stimulated emission of radiation [laser] to amplify or generate light7%
H04LTransmission of digital information, e.g. telegraphic communication6%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests3%
B23KSoldering or unsoldering2%
H04QSelecting2%
B29CShaping or joining of plastics1%
B29KIndexing scheme associated with subclasses b29b, b29c or b29d, relating to moulding materials or to materials for moulds, reinforcements, fillers or preformed parts, e.g. inserts1%
PatentTitleYear
8,855,256'Serial data recovery in digital receiver configurations'20148,756,628'Video representation delivery system and service and a method of operation thereof'20148,537,941'Bit-synchronous feedback control of receiver sensitivity'20138,351,338'Sharing single tester among plurality of active communication links'20137,668,233'Method of determining jitter and apparatus for determining jitter'20106,702,476'Optical fiber device having attachment to optical device package'20046,577,399'Optical waveguide based power and wavelength monitor'20036,430,337'Optical alignment system'20026,377,730'Waveguide based component optical signal power and wavelength detector'20026,374,012'Method and apparatus for adjusting the path of an optical beam'20026,351,583'Multiple laser wavelength stabilization'20026,289,153'Laser aided tilt adjustment of an optical lens'20016,282,344'Intersecting N x M star couplers for routing optical signals'20016,278,953'Automated alignment system'20016,275,625'Optical mirror switch using a michelson interferometer'20016,253,005'Apparatus and method for compensating for misalignment in reflective packages'20016,249,626'Multimode fiber optical power monitoring tap for optical transmission systems'20016,249,619'Optical isolator'20016,240,222'Wavelength specific operations in optical systems'20016,236,497'Direct free space pump signal mixing for EDFA'20016,198,567'Faraday rotation variable attenuator'20016,178,284'Variable single-mode attenuators by spatial interference'20016,175,670'Planar lightguide circuit having a planar grating'20016,173,092'Optical mirror switch utilizing walk-off devices'20016,163,643'Micro-mechanical variable optical attenuator'20006,128,133'Optical beamsplitter'20006,125,221'Three port optical filter'20006,112,000'Reflective array multiplexer with polarization compensation'20006,091,543'Apparatus for providing non-reciprocal termination of parallel like polarization modes'20006,064,522'Miniature mass producible non-reciprocal devices'20006,055,101'Isolator assembly and method of making'20006,049,412'Reflective Faraday-based optical devices including an optical monitoring tap'20006,040,942'Polarization separator/combiner'20006,031,946'Moving mirror switch'20006,015,998'Flexibility control in optical materials'20006,014,270'Cylindrical lenses for alignment of optical sources and destinations'20006,002,512'Optical circulator using latchable garnet'19995,973,860'Rotatable cylindrical elements for optical alignment'19995,956,356'Monitoring wavelength of laser devices'19995,930,028'Split reciprocal polarization switch'19995,923,472'3-port optical circulator/switch with mirror'19995,872,878'Partial optical circulators'19995,835,654'Optical coupling'19985,822,118'Walk-off device'19985,771,120'Optical apparatus with combined polarization functions'19985,745,620'Optical coupling'19985,729,377'Optical apparatus'19985,703,992'Method and apparatus for packaging optical components'19975,590,140'Clock recovery extrapolation'19965,526,439'Optical filter using electro-optic material'19965,414,785'Optical data bus having collision detection capability'19955,384,876'Quasi-hermaphroditic-type optical fiber connection'19955,377,900'Method of precisely positioning and mating two workpieces'19955,363,461'Field installable optical fiber connectors'19945,276,303'Laser bonding scheme'19945,241,552'Compensated laser structure for analog communication applications'19935,140,655'Optical star coupler utilizing fiber amplifier technology'19925,138,475'DC-coupled optical data link utilizing differential transmission'19924,821,297'Digital phase locked loop clock recovery scheme'19894,775,971'Optical communication system'19884,492,436'Polarization independent beam splitter'1985Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1985–1994Patents assigned to AT & T BELL LAB (5)· patent assignee history
1985–2014Based in Fountain Hill, PA, US· patent location history
1994–2014Based in Bethlehem, PA, US· patent location history
1995–1996Patents assigned to AT & T CORP (4)· patent assignee history
1996–2001Patents assigned to LUCENT TECHNOLOGIES INC (31)· patent assignee history
1998Based in Terre Hill, PA, US· patent location history
1998Based in Plum Borough, PA, US· patent location history
2000–2002Based in Lehigh County, PA, US· patent location history
2001–2002Patents assigned to AGERE SYST OPTOELECTRONICS (7)· patent assignee history
2002Patents assigned to AGERE SYST GUARDIAN CORP (3)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| LUCENT TECHNOLOGIES INC | 31 | 1996–2001 |
| AGERE SYST OPTOELECTRONICS | 7 | 2001–2002 |
| AT & T BELL LAB | 5 | 1985–1994 |
| AT & T CORP | 4 | 1995–1996 |
| AGERE SYST GUARDIAN CORP | 3 | 2002 |
Locations
| Location | Patents | Span |
|---|---|---|
| Fountain Hill, Pennsylvania, US | 50 | 1985–2014 |
| Lehigh County, Pennsylvania, US | 7 | 2000–2002 |
| Bethlehem, Pennsylvania, US | 2 | 1994–2014 |
| Terre Hill, Pennsylvania, US | 1 | 1998 |
| Plum Borough, Pennsylvania, US | 1 | 1998 |