Inventor
David J. Sylvester
Inventor
Steger, IL, US
Overview
Patents· 15 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H02Gprimary
H02GInstallation of electric cables or lines, or of combined optical and electric cables or lines21%
E06CLadders17%
F16LPipes10%
B66BElevators6%
F16BDevices for fastening or securing constructional elements or machine parts together, e.g. nails, bolts, circlips, clamps, clips or wedges6%
F16CShafts6%
G06QInformation and communication technology [ict] specially adapted for administrative, commercial, financial, managerial or supervisory purposes6%
F16MFrames, casings or beds of engines, machines or apparatus, not specific to engines, machines or apparatus provided for elsewhere4%
G06FElectric digital data processing4%
G09CCiphering or deciphering apparatus for cryptographic or other purposes involving the need for secrecy4%
PatentTitleYear
11,050,231Access ports for electrical enclosures202110,663,089Universal cable tie mount202010,407,985Cradle clamp bracket assembly201910,329,063Cable tie strap and buckle201910,246,941Ladder rung bracket assembly201910,240,393Thermal expansion and contraction system20199,947,001System and method for using multiple payment accounts using a single payment device20189,882,365'Cradle clamp bracket assembly'20189,810,021'Thermal expansion and contraction system'20179,787,476'Image verification by an electronic device'20179,719,300'Ladder rung bracket assembly'20179,587,433'Cradle clamp bracket assembly'20179,531,549'Image verification by an electronic device'20169,309,719'Ladder rung bracket assembly'2016D0331505'Folding table'1992Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1992–2017Patents assigned to SYLVESTER DAVID J (2)· patent assignee history
1992Based in Redondo Beach, CA, US· patent location history
2016–2021Patents assigned to PANDUIT CORP (11)· patent assignee history
2016–2018Patents assigned to MASTERCARD INTERNATIONAL INC (3)· patent assignee history
2016–2019Based in Steger, IL, US· patent location history
2016–2017Based in London, GB· patent location history
2017Patents assigned to BENEDICT SCOTT K (1)· patent assignee history
2017Patents assigned to BROUWER SHAUN P (1)· patent assignee history
2018Based in Brentwood, GB· patent location history
2019–2021Based in Manhattan, IL, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| PANDUIT CORP | 11 | 2016–2021 |
| MASTERCARD INTERNATIONAL INC | 3 | 2016–2018 |
| SYLVESTER DAVID Jself | 2 | 1992–2017 |
| BENEDICT SCOTT K | 1 | 2017 |
| BROUWER SHAUN P | 1 | 2017 |
Locations
| Location | Patents | Span |
|---|---|---|
| Steger, Illinois, US | 7 | 2016–2019 |
| Manhattan, Illinois, US | 4 | 2019–2021 |
| London, GB | 2 | 2016–2017 |
| Brentwood, GB | 1 | 2018 |
| Redondo Beach, California, US | 1 | 1992 |