Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
WD

Walter M. Doyle — 47 Patents

LPLaser Precision: 24 patents #1 of 13Top 8%
AAAxiom Analytical: 19 patents #1 of 2Top 50%
RTResearch-Cottrell Technologies: 1 patents #3 of 10Top 30%
Tustin, CA: #19 of 1,327 inventorsTop 2%
California: #8,880 of 386,348 inventorsTop 3%
Overall (All Time): #59,703 of 4,157,543Top 2%
47 Patents All Time
Walter M. Doyle has been granted 47 US patents while listed as an inventor at Laser Precision. The first was granted in 1980 and the most recent in May 2018. Walter M. Doyle ranks #59,703 of 4,157,543 US inventors in our database (top 1.4%). Patent records list Walter M. Doyle in Tustin, CA, US.

Patents per Year

Patents granted per year, 1980 to 2018Bar chart with a peak of 7 patents in 1991.peak 71980: 3 patents19801981: 1 patents1984: 1 patents1985: 4 patents19851986: 1 patents1987: 2 patents1988: 5 patents19881989: 6 patents1991: 7 patents1993: 2 patents19931995: 3 patents1996: 1 patents1998: 2 patents19981999: 2 patents2003: 1 patents2004: 1 patents20042005: 1 patents2008: 1 patents2010: 1 patents20102017: 1 patents2018: 1 patents2018

Issued Patents All Time

Showing 1–25 of 47 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
9958321 Transverse optical transmission probe Norman A. Jennings 2018-05-01
9618447 Optical transmission cell with minimized spurious absorption Norman A. Jennings 2017-04-11
RE41744 Raman probe having a small diameter immersion tip 2010-09-21
7446317 Multipass cell for gas analysis using a coherent optical source 2008-11-04
6876801 Raman probe having a small diameter immersion tip 2005-04-05
6795177 Multipass sampling system for Raman spectroscopy 2004-09-21
6563992 Small diameter diffuse reflectance probe 2003-05-13
6009219 Optical beam switching device 1999-12-28
5991029 Attenuated total reflecance probe employing large incidence angles 1999-11-23
5818996 Fiber-optic coupled diffuse reflectance probe 1998-10-06
5773825 Bi-layer attenuated total reflectance device providing optimized absorbance linearity 1998-06-30
5566086 Method of ensuring accurate identification and measurement of solutes 1996-10-15
5459316 Immersion probe for infrared internal reflectance spectroscopy 1995-10-17
5421194 Liquid quality analysis system combining sparging and an infrared gas cell Norman A. Jennings 1995-06-06
5418615 Probe for liquid sample analysis by light transmission 1995-05-23
5239409 Reflectance infrared microscope having high radiation throughput Norman S. Hughes 1993-08-24
5218856 Analysis of liquid-carried impurities by means of sparging 1993-06-15
5065025 Gas sample analysis provided by light pipe radiation structure 1991-11-12
5054869 Light pipe system having maximum radiation throughput 1991-10-08
5054920 Internal reflectance cell having improved sample flow geometry 1991-10-08
5051551 Immersion probe for infrared internal reflectance spectroscopy 1991-09-24
5015100 Apparatus and method for normal incidence reflectance spectroscopy 1991-05-14
5011243 Reflectance infrared microscope having high radiation throughput Norman S. Hughes 1991-04-30 $765,000
4988195 Internal reflectance apparatus and method using cylindrical elements 1991-01-29
4852955 Microscope for use in modular FTIR spectrometer system Norman S. Hughes 1989-08-01 $336,000