Ralph Andre Logan

Person

Morristown, NJ, US

People

Patents Grantslast 30 patents

Information Patent Grant
InP-based quantum-well laser
- Patent number 5,040,186
- Issue date Aug 13, 1991
- AT&T Bell Laboratories
- Ralph A. Logan
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Method for forming a heteroepitaxial structure, and a device manufa...
- Patent number 4,953,170
- Issue date Aug 28, 1990
- AT&T Bell Laboratories
- Ralph A. Logan
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Method of making a nonplanar buried-heterostructure distributed-fee...
- Patent number 4,701,995
- Issue date Oct 27, 1987
- American Telephone and Telegraph Company, AT&T Bell Laboratories
- Gerald J. Dolan
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Double active layer semiconductor laser
- Patent number 4,627,065
- Issue date Dec 2, 1986
- AT&T Bell Laboratories
- Ralph A. Logan
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Method of making heteroepitaxial ridge overgrown laser
- Patent number 4,575,919
- Issue date Mar 18, 1986
- AT&T Bell Laboratories
- Ralph A. Logan
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Method of making a loss stabilized buried heterostructure laser
- Patent number 4,536,940
- Issue date Aug 27, 1985
- AT&T Bell Laboratories
- Charles H. Henry
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Loss stabilized buried heterostructure laser
- Patent number 4,481,631
- Issue date Nov 6, 1984
- AT&T Bell Laboratories
- Charles H. Henry
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Method for selective area growth by liquid phase epitaxy
- Patent number 4,464,211
- Issue date Aug 7, 1984
- AT&T Bell Laboratories
- Ralph A. Logan
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Photodiode having an InGaAs layer with an adjacent InGaAsP p-n junc...
- Patent number 4,390,889
- Issue date Jun 28, 1983
- Bell Telephone Laboratories, Incorporated
- Federico Capasso
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Strip buried heterostructure laser
- Patent number 4,269,635
- Issue date May 26, 1981
- Bell Telephone Laboratories, Incorporated
- Ralph A. Logan
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Oxide masking of gallium arsenide
- Patent number 4,226,667
- Issue date Oct 7, 1980
- Bell Telephone Laboratories, Incorporated
- Ralph A. Logan
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Method for fabricating junction lasers having lateral current confi...
- Patent number 4,194,933
- Issue date Mar 25, 1980
- Bell Telephone Laboratories, Incorporated
- Ralph A. Logan
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Strip buried heterostructure laser
- Patent number 4,190,813
- Issue date Feb 26, 1980
- Bell Telephone Laboratories, Incorporated
- Ralph A. Logan
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Lateral current confinement in junction lasers
- Patent number 4,169,997
- Issue date Oct 2, 1979
- Bell Telephone Laboratories, Incorporated
- Ralph A. Logan
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Dual beam double cavity heterostructure laser with branching output...
- Patent number 4,159,452
- Issue date Jun 26, 1979
- Bell Telephone Laboratories, Incorporated
- Ralph A. Logan
- G02 - OPTICS
Information Patent Grant
Optical integrated circuit including junction laser with oblique mi...
- Patent number 4,136,928
- Issue date Jan 30, 1979
- Bell Telephone Laboratories, Incorporated
- Ralph A. Logan
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor rib waveguide optical modulator with heterojunction c...
- Patent number 4,093,345
- Issue date Jun 6, 1978
- Bell Telephone Laboratories, Incorporated
- Ralph Andre Logan
- G02 - OPTICS
Information Patent Grant
LPE Technique for fabricating tapered optical couplers
- Patent number 4,028,146
- Issue date Jun 7, 1977
- Bell Telephone Laboratories, Incorporated
- Ralph Andre Logan
- G02 - OPTICS
Information Patent Grant
Heterostructure devices, a light guiding layer having contiguous zo...
- Patent number 3,993,963
- Issue date Nov 23, 1976
- Bell Telephone Laboratories, Incorporated
- Ralph Andre Logan
- C30 - CRYSTAL GROWTH
Information Patent Grant
Heterostructure devices including tapered optical couplers
- Patent number 3,978,426
- Issue date Aug 31, 1976
- Bell Telephone Laboratories, Incorporated
- Ralph Andre Logan
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Thin film liquid waveguide optical converter
- Patent number 3,935,472
- Issue date Jan 27, 1976
- Bell Telephone Laboratories, Incorporated
- Clyde G. Bethea
- G02 - OPTICS

Ralph Andre Logan

Person

Patents Grantslast 30 patents

InP-based quantum-well laser

Method for forming a heteroepitaxial structure, and a device manufa...

Method of making a nonplanar buried-heterostructure distributed-fee...

Double active layer semiconductor laser

Method of making heteroepitaxial ridge overgrown laser

Method of making a loss stabilized buried heterostructure laser

Loss stabilized buried heterostructure laser

Method for selective area growth by liquid phase epitaxy

Photodiode having an InGaAs layer with an adjacent InGaAsP p-n junc...

Strip buried heterostructure laser

Oxide masking of gallium arsenide

Method for fabricating junction lasers having lateral current confi...

Strip buried heterostructure laser

Lateral current confinement in junction lasers

Dual beam double cavity heterostructure laser with branching output...

Optical integrated circuit including junction laser with oblique mi...

Semiconductor rib waveguide optical modulator with heterojunction c...

LPE Technique for fabricating tapered optical couplers

Heterostructure devices, a light guiding layer having contiguous zo...

Heterostructure devices including tapered optical couplers

Thin film liquid waveguide optical converter