Inventor
Howard L. Johnson
Inventor
Joliet, IL, US
Overview
Patents· 36 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
F15Bprimary
F15BSystems acting by means of fluids in general25%
Y10TTechnical subjects covered by former us classification20%
C07DHeterocyclic compounds12%
C07CAcyclic or carbocyclic compounds8%
F16KValves7%
H04LTransmission of digital information, e.g. telegraphic communication7%
E02FDredging5%
F04BPositive-displacement machines for liquids5%
A01DHarvesting3%
B62DMotor vehicles3%
PatentTitleYear
9,729,449'Method and apparatus for enhanced routing within a shortest path based routed network containing local and long distance links'20179,571,423'Port decommissioning'20179,397,958'FCoE VN—port virtualizer'20169,379,976'FCoE VN—port to FC N—port operations in an ethernet fabric'20165,242,936'Phenoxy alkanol esters for treatment of allergic conditions'19935,021,460'P-alkyl phenoxy alkanols for the treatment of allergic conditions'19914,816,491'Treatment of allergic conditions using indanyloxy-alkanol derivatives'19894,543,362'P-Alkyl or cycloalkyl phenoxy alkanols and alkanol esters and process for the treatment of allergic conditions'19854,451,474'T-Butyl-phenoxy-alkylene esters of benzoic and nicotinic acids, compositions containing same and their antihistaminic method of use'19844,367,884'Removable gooseneck for trailers'19834,345,436'Control for load sharing pumps'19824,269,843'N-Sec-alkyl analogs of norcodeine and normorphine and analgesic compositions and methods employing the normorphine derivatives'19814,249,842'Self loading multiple bale trailer'19814,245,816'Flow force balanced spool valve'19814,232,986'Trailer with multiple bale elevating apparatus and method of bale handling'19804,218,454'N-.alpha.Methylcyclopropylmethyl derivatives of normorphine and noroodeine, and analgesic compositions and methods employing the normorphine derivatives'19804,204,459'Combination check and flow control valve for hydraulic systems'19804,196,588'Margin valve'19804,184,410'Low pressure signal driven flow control system'19804,147,034'Hydraulic system with priority control'19794,142,282'Method for assembling a cartridge-type valve'19794,132,245'External centering spring adjustment for a spool valve'19794,114,516'Anti-cavitation and pressure modulating relief valve for controlling hydraulic cylinders'19784,089,170'Power conservation means for variable displacement pump fluid supply system'19784,084,609'Cartridge type check valve'19784,034,564'Piston pump assembly having load responsive controls'19774,033,236'All hydraulic motor grader circuitry'19774,024,797'Spring centered balanced resolver valve'19773,998,053'Three-pump - three-circuit fluid system of a work vehicle having controlled fluid-combining means'19763,991,571'Fluid system of a work vehicle having fluid combining means and signal combining means'19763,990,477'Force balanced valve spool'19763,990,236'Load responsive pump controls of a fluid system'19763,987,704'Fluid system of a work vehicle having fluid combining means'19763,987,622'Load controlled fluid system having parallel work elements'19763,974,742'Lock valve assembly'19763,959,141'Fluid filter system'1976Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1976–1982Patents assigned to CATERPILLAR TRACTOR CO (22)· patent assignee history
1976–1982Based in Joliet, IL, US· patent location history
1980–1983Patents assigned to JOHNSON HOWARD L (3)· patent assignee history
1980–1981Patents assigned to STANFORD RES INST INT (2)· patent assignee history
1980–1993Based in Sunnyvale, CA, US· patent location history
1980–1983Based in Kansas City, MO, US· patent location history
1984–1993Patents assigned to BERGER FRANK M (5)· patent assignee history
2016–2017Patents assigned to BROCADE COMM SYSTEMS INC (4)· patent assignee history
2016–2017Based in Louisville, CO, US· patent location history
2017Based in San Jose, CA, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| CATERPILLAR TRACTOR CO | 22 | 1976–1982 |
| BERGER FRANK M | 5 | 1984–1993 |
| BROCADE COMM SYSTEMS INC | 4 | 2016–2017 |
| JOHNSON HOWARD Lself | 3 | 1980–1983 |
| STANFORD RES INST INT | 2 | 1980–1981 |
Locations
| Location | Patents | Span |
|---|---|---|
| Joliet, Illinois, US | 22 | 1976–1982 |
| Sunnyvale, California, US | 7 | 1980–1993 |
| Louisville, CO, US | 3 | 2016–2017 |
| Kansas City, MO, US | 3 | 1980–1983 |
| San Jose, California, US | 1 | 2017 |