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

Ram Kelkar — 36 Patents

IBM: 34 patents #2,881 of 70,183Top 5%
Globalfoundries: 2 patents #1,397 of 4,424Top 35%
South Burlington, VT: #55 of 1,136 inventorsTop 5%
Vermont: #189 of 4,968 inventorsTop 4%
Overall (All Time): #92,222 of 4,157,543Top 3%
36 Patents All Time
Ram Kelkar has been granted 36 US patents while listed as an inventor at IBM. The first was granted in 1996 and the most recent in August 2016. Ram Kelkar ranks #92,222 of 4,157,543 US inventors in our database (top 2.2%). Patent records list Ram Kelkar in South Burlington, VT, US.

Patents per Year

Patents granted per year, 1996 to 2016Bar chart with a peak of 5 patents in 2005.peak 51996: 4 patents19961997: 3 patents1998: 1 patents19981999: 1 patents2000: 1 patents20002001: 1 patents2002: 1 patents20022005: 5 patents2006: 2 patents20062007: 1 patents2008: 4 patents20082009: 3 patents2010: 2 patents20102011: 1 patents2013: 1 patents20132014: 2 patents2016: 3 patents2016

Issued Patents All Time

Showing 1–25 of 36 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
9425736 Variable capacitor structure 2016-08-23 $3,302,000
9281779 Structure for an inductor-capacitor voltage-controlled oscillator Herschel A. Ainspan, Anjali R. Malladi, Ramana Malladi 2016-03-08 $1,276,000
9252717 Phase noise reduction in LC-VCO Anthony R. Bonaccio, Zhenrong Jin, Anjali R. Malladi, Ramana Malladi 2016-02-02 $567,000
8912854 Structure for an inductor-capacitor voltage-controlled oscillator Herschel A. Ainspan, Anjali R. Malladi, Ramana Malladi 2014-12-16 $3,695,000
8648634 Input jitter filter for a phase-locked loop (PLL) Faraydon Pakbaz 2014-02-11 $7,953,000
8373510 Programmable filter for LC tank voltage controlled oscillator (VCO), design structure and method thereof 2013-02-12 $6,681,000
7915963 Current controlled oscillation device and method having wide frequency range Anjali R. Malladi 2011-03-29 $5,031,000
7728687 Negative resistance oscillator with additional bias current injection Anjali R. Malladi 2010-06-01 $6,263,000
7710206 Design structure for improved current controlled oscillation device and method having wide frequency range Anjali R. Malladi 2010-05-04 $4,679,000
7545191 Method for dividing a high-frequency signal John S. Austin, Pradeep Thiagarajan 2009-06-09 $8,207,000
7532040 Programmable sensitivity frequency coincidence detection circuit and method Grant P. Kesselring 2009-05-12 $9,410,000
7489207 Structure for voltage controlled oscillator 2009-02-10 $5,620,000
7391271 Adjustment of PLL bandwidth for jitter control using feedback circuitry Hayden C. Cranford, Jr., Anjali R. Malladi, Martin Schmatz, Nina A. Shah 2008-06-24 $7,053,000
7378890 Programmable low-power high-frequency divider John S. Austin, Pradeep Thiagarajan 2008-05-27 $8,304,000
7355486 Current controlled oscillation device and method having wide frequency range Anjali R. Malladi 2008-04-08 $6,866,000
7342429 Programmable low-power high-frequency divider John S. Austin, Pradeep Thiagarajan 2008-03-11 $9,920,000
7180973 Programmable low-power high-frequency divider John S. Austin, Pradeep Thiagarajan 2007-02-20 $6,976,000
7075350 Programmable low-power high-frequency divider John S. Austin, Pradeep Thiagarajan 2006-07-11 $5,175,000
7049864 Apparatus and method for high frequency state machine divider with low power consumption Pradeep Thiagarajan 2006-05-23 $5,226,000
6943608 Wide frequency range voltage-controlled oscillators (VCO) 2005-09-13 $5,632,000
6940324 Variation of effective filter capacitance in phase lock loop circuit loop filters Anjali R. Malladi 2005-09-06 $5,379,000
6917662 Programmable low-power high-frequency divider John S. Austin, Pradeep Thiagarajan 2005-07-12 $9,006,000
6882230 System and method for control parameter re-centering in a controlled phase lock loop system Joseph A. Iadanza, Stephen D. Wyatt 2005-04-19 $7,105,000
6876238 Charge pump Anjali R. Malladi 2005-04-05 $5,479,000
6456165 Phase error control for phase-locked loops 2002-09-24 $8,983,000