Inventor

Robert A. Sadler

Inventor

Roanoke, VA, US

Overview

29→

Patents

1988–2009

Patent span

Electricity

Primary field (CPC H)

Patents· 29 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

H01Qprimary

H01QAntennas, i.e. radio aerials45%

H10DInorganic electric semiconductor devices29%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests16%

H10PGeneric processes or apparatus for the manufacture or treatment of devices covered by class h105%

H04BTransmission3%

H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h103%

PatentTitleYear

7,592,958'Multi-band antennas and radio apparatus incorporating the same'2009 7,136,681'Electrically conductive carrier and patterning for controlling current distribution in a wireless communications device'2006 7,015,863'Multi-band, inverted-F antenna with capacitively created resonance, and radio terminal using same'2006 6,903,686'Multi-branch planar antennas having multiple resonant frequency bands and wireless terminals incorporating the same'2005 6,662,028'Multiple frequency inverted-F antennas having multiple switchable feed points and wireless communicators incorporating the same'2003 6,563,466'Multi-frequency band inverted-F antennas with coupled branches and wireless communicators incorporating same'2003 6,529,749'Convertible dipole/inverted-F antennas and wireless communicators incorporating the same'2003 6,417,816'Dual band bowtie/meander antenna'2002 6,380,903'Antenna systems including internal planar inverted-F antennas coupled with retractable antennas and wireless communicators incorporating same'2002 6,229,487'Inverted-F antennas having non-linear conductive elements and wireless communicators incorporating the same'2001 6,218,992'Compact, broadband inverted-F antennas with conductive elements and wireless communicators incorporating same'2001 6,204,819'Convertible loop/inverted-f antennas and wireless communicators incorporating the same'2001 6,198,943'Parasitic dual band matching of an internal looped dipole antenna'2001 6,137,998'Shielding for radiotelephones with retractable antennas'2000 6,011,519'Dipole antenna configuration for mobile terminal'2000 5,995,052'Flip open antenna for a communication device'1999 5,923,305'Dual-band helix antenna with parasitic element and associated methods of operation'1999 5,856,808'Single feed point matching systems'1999 5,565,696'Planar ion-implanted GaAs MESFETS with improved open-channel burnout characteristics'1996 5,536,666'Method for fabricating a planar ion-implanted GaAs MESFET with improved open-channel burnout characteristics'1996 4,994,868'Heterojunction confined channel FET'1991 4,965,218'Self-aligned gate realignment employing planarizing overetch'1990 4,962,050'GaAs FET manufacturing process employing channel confining layers'1990 4,956,308'Method of making self-aligned field-effect transistor'1990 4,948,752'Method of making sagfets on buffer layers'1990 4,918,493'Sagfet with buffer layers'1990 4,849,376'Self-aligned refractory gate process with self-limiting undercut of an implant mask'1989 4,847,212'Self-aligned gate FET process using undercut etch mask'1989 4,782,032'Method of making self-aligned GaAs devices having TiWN.sub.x gate/interconnect'1988

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1988–1989Patents assigned to ITT GALLIUM ARSENIDE TECH (2)· patent assignee history

1988–1996Based in Roanoke, VA, US· patent location history

1990–1996Patents assigned to ITT (8)· patent assignee history

1999–2003Patents assigned to ERICSSON INC (9)· patent assignee history

1999Patents assigned to ERICSSON GE MOBILE INC (2)· patent assignee history

1999–2002Based in Durham, NC, US· patent location history

2001–2006Patents assigned to ERICSSON TELEFON AB L M (4)· patent assignee history

2001–2006Based in Raleigh, NC, US· patent location history

2009Based in Duluth, GA, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
ERICSSON INC	9	1999–2003
ITT	8	1990–1996
ERICSSON TELEFON AB L M	4	2001–2006
ERICSSON GE MOBILE INC	2	1999
ITT GALLIUM ARSENIDE TECH	2	1988–1989

Locations

Location	Patents	Span
Roanoke, Virginia, US	11	1988–1996
Raleigh, NC, US	10	2001–2006
Durham, NC, US	7	1999–2002
Duluth, Georgia, US	1	2009