Inventor
Robert M. Campbell
Inventor
Midland, MI, US
Overview
Patents· 33 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C07Cprimary
C07CAcyclic or carbocyclic compounds11%
C07DHeterocyclic compounds11%
F41GWeapon sights11%
A61BDiagnosis10%
A61FFilters implantable into blood vessels5%
F41JTargets5%
G01NInvestigating or analysing materials by determining their chemical or physical properties5%
Y10TTechnical subjects covered by former us classification5%
B01DSeparation3%
F16BDevices for fastening or securing constructional elements or machine parts together, e.g. nails, bolts, circlips, clamps, clips or wedges3%
PatentTitleYear
10,960,116Percutaneous heart pump202110,876,816Camera sight devices and rear viewing camera smart phone mount for a firearm202010,845,166Surveillance device202010,808,370Oil spill clean-up and recovery systems for marine vessels202010,662,370Nonionic surfactant compositions for enhanced oil recovery202010,591,249Camera sight device for a weapon202010,578,405Sight adjustable rotating smart phone mount for firearms2020D0856477Device for preventing sewer backflow201910,359,256Camara sight with smart phone mount201910,175,028Device for use with a target viewing device201910,077,355Plasticizer compositions and methods for making plasticizer compositions201810,006,742Sight adjustable rotating smart phone mount for firearms20189,519,489'Boot from modified image'20168,404,905'Batch, semi-continuous or continuous hydrochlorination of glycerin with reduced volatile chlorinated hydrocarbon by-products and chloroacetone levels'20138,304,563'Batch, semi-continuous or continuous hydrochlorination of glycerin with reduced volatile chlorinated hydrocarbon by-products and chloroacetone levels'20128,236,975'Process for the conversion of a crude glycerol, crude mixtures of naturally derived multicomponent aliphatic hydrocarbons or esters thereof to a chlorohydrin'20128,088,957'Conversion of a multihydroxylated-aliphatic hydrocarbon or ester thereof to a chlorohydrin'20127,910,781'Process for the conversion of a crude glycerol, crude mixtures of naturally derived multihydroxylated aliphatic hydrocarbons or esters thereof to a chlorohydrin'20117,906,690'Batch, semi-continuous or continuous hydrochlorination of glycerin with reduced volatile chlorinated hydrocarbon by-products and chloracetone levels'20116,350,922'Process for making 2,3-dihalopropanols'20025,836,949'Bioabsorbable intermedullary implant system and methods of use'19985,800,434'Segmental rib carriage instrumentation and associated methods'1998D0381499'Key holder'19975,632,744'Segmental rib carriage instrumentation and associated methods'19975,620,414'Apparatus and method for effecting surgical incision through use of a fluid jet'19975,340,475'On-line supercritical fluid extraction multidimensional chromatographic system'19945,261,908'Expandable vertical prosthetic rib'19935,233,877'Starter drive gear'19935,234,599'On-line multidimensional chromatographic system with large volume injection handling for supercritical fluid chromatography'19935,139,681'On-line multidimensional chromatographic system with large volume injection handling for supercritical fluid chromatography'19925,092,889'Expandable vertical prosthetic rib'19925,030,235'Prosthetic first rib'19914,965,955'Capture apparatus for marine animals'1990Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1990–2013Patents assigned to CAMPBELL ROBERT M (7)· patent assignee history
1991–1998Based in San Antonio, TX, US· patent location history
1992–2002Patents assigned to DOW CHEMICAL CO (4)· patent assignee history
1992–2020Based in Midland, MI, US· patent location history
2011–2020Patents assigned to DOW GLOBAL TECHNOLOGIES LLC (7)· patent assignee history
2012–2013Patents assigned to HOOK BRUCE D (4)· patent assignee history
2018–2020Patents assigned to CAMPBELL ROBERT MARSHALL (7)· patent assignee history
2018–2020Based in Miami, FL, US· patent location history
2019Based in Brampton, CA· patent location history
2021Based in Port Matilda, PA, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| CAMPBELL ROBERT Mself | 7 | 1990–2013 |
| CAMPBELL ROBERT MARSHALLself | 7 | 2018–2020 |
| DOW GLOBAL TECHNOLOGIES LLC | 7 | 2011–2020 |
| DOW CHEMICAL CO | 4 | 1992–2002 |
| HOOK BRUCE D | 4 | 2012–2013 |
Locations
| Location | Patents | Span |
|---|---|---|
| Midland, MI, US | 12 | 1992–2020 |
| Miami, Florida, US | 8 | 2018–2020 |
| San Antonio, Texas, US | 6 | 1991–1998 |
| Port Matilda, Pennsylvania, US | 1 | 2021 |
| Brampton, CA | 1 | 2019 |