Inventor
John L. Marshall
Inventor
Somerville, MA, US
Overview
Patents· 40 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
B41Mprimary
B41MPrinting, duplicating, marking, or copying processes22%
G03CPhotosensitive materials for photographic purposes17%
G03FPhotomechanical production of textured or patterned surfaces, e.g. for printing, for processing of semiconductor devices16%
C07DHeterocyclic compounds9%
C09BOrganic dyes or closely-related compounds for producing dyes, e.g. pigments8%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests6%
C07CAcyclic or carbocyclic compounds5%
G01VGeophysics4%
G11BInformation storage based on relative movement between record carrier and transducer3%
A61NElectrotherapy2%
PatentTitleYear
9,505,255'Thermal imaging members and methods'20168,722,574'Thermal imaging members and methods'20148,673,857'Long term potentiation with cyclic-GluR6 analogs'20148,562,595'Retinal regeneration'20138,270,248'Method for initializing receiver channels in a cement bond logging tool'20127,911,876'Method for initializing receiver channels in a cement bond logging tool'20117,829,497'Thermal imaging members and methods'20107,807,607'Color-forming compounds and use thereof in imaging members and methods'20107,802,619'Firing trigger apparatus and method for downhole tools'20107,704,667'Dyes and use thereof in imaging members and methods'20107,414,918'Method for normalizing signals in a cement bond logging tool'20087,411,864'Method for processing signals in a cement bong logging tool'20087,220,868'Process for the preparation of novel dyes for use in imaging members'20077,008,759'Dyes and use thereof in imaging members and methods'20066,541,177'Diffusion transfer photographic film unit'20036,537,410'Thermal transfer recording system'20036,482,950'Squarylium compounds, and processes and intermediates for the synthesis of these compounds'20026,307,085'Process and composition for generation of acid'20016,242,154'Process and composition for generation of acid'20016,110,638'Process and composition for generation of acid'20006,015,907'Trisubstituted pyridine dyes'20006,004,719'Imaging medium and process for producing an image'19995,919,950'Squarylium compounds, and processes and intermediates for the synthesis of these compounds'19995,919,608'Medium and process for generating acid using sensitizing dye and supersensitizer'19995,914,213'Process and composition for generation of acid'19995,741,630'Process for fixing an image, and medium for use therein'19985,631,118'Imaging medium'19975,582,956'Process for fixing an image, and medium for use therein'19965,578,424'Process for generation of unbuffered super-acid and for imaging'19965,534,388'Process for generation of acid and for imaging, and imaging medium for use therein'19965,453,345'Imaging medium'19955,445,917'Imaging medium'19955,441,850'Imaging medium and process for producing an image'19955,395,736'Process for generation of acid and for imaging, and imaging medium for use therein'1995D0355222'Sign'19954,324,253'Transcutaneous pain control and/or muscle stimulating apparatus'1982D0259058'Knee brace'19814,147,171'Transcutaneous pain control and/or muscle stimulating apparatus'19794,068,121'Light collector and prism light source for photoelectric readers'19784,032,766'Wide range current flow fault detector'1977Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1977–1982Based in Renton, WA, US· patent location history
1979–2014Patents assigned to MARSHALL JOHN L (5)· patent assignee history
1979–1982Patents assigned to GREENE RONALD W (2)· patent assignee history
1995–2006Patents assigned to POLAROID CORP (20)· patent assignee history
1995–2002Based in Somerville, MA, US· patent location history
2003–2016Based in Lexington, MA, US· patent location history
2008–2012Patents assigned to PROBE TECHNOLOGY SERVICES INC (5)· patent assignee history
2008–2012Based in Arlington, TX, US· patent location history
2010–2016Patents assigned to ZINK IMAGING INC (5)· patent assignee history
2014Based in Barrington, RI, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| POLAROID CORP | 20 | 1995–2006 |
| MARSHALL JOHN Lself | 5 | 1979–2014 |
| PROBE TECHNOLOGY SERVICES INC | 5 | 2008–2012 |
| ZINK IMAGING INC | 5 | 2010–2016 |
| GREENE RONALD W | 2 | 1979–1982 |
Locations
| Location | Patents | Span |
|---|---|---|
| Somerville, Massachusetts, US | 18 | 1995–2002 |
| Lexington, Massachusetts, US | 9 | 2003–2016 |
| Arlington, Texas, US | 5 | 2008–2012 |
| Renton, Washington, US | 4 | 1977–1982 |
| Barrington, RI, US | 1 | 2014 |