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Inventor

Charles B. Hartfelder

Inventor
Hanover Park, IL, US

Overview

20→
Patents
2010–2020
Patent span
Human necessities
Primary field (CPC A)

Patents· 20 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

A47Jprimary
A47JKitchen equipment38%
B65GTransport or storage devices, e.g. conveyors for loading or tipping, shop conveyor systems or pneumatic tube conveyors19%
F24CDomestic stoves or ranges14%
H05BElectric heating14%
A21BBakers' ovens5%
Y10TTechnical subjects covered by former us classification5%
LOC072%
LOC092%
PatentTitleYear
10,852,002Multi-zone food holding bin202010,841,981Multi-zone food holding bin2020D0872573Food holding bin202010,512,363Multi-zone food holding bin201910,494,183Conveyor belt slat with side carrier connection201910,492,641Multi-zone food holding bin201910,494,182Conveyor belt slat with side carrier connection201910,486,908Conveyor belt slat with side carrier connection201910,308,433Conveyor belt slat with side carrier connection201910,273,089Conveyor belt slat201910,173,844Conveyor belt link with coupling mechanism20199,980,322Multi-zone food holding bin20189,976,750Multi-zone food holding bin20189,908,708'Conveyor belt link with coupling mechanism'20189,889,992'Conveyor belt slat'2018D0809326'Food holding bin'20188,404,292'Apparatus and method for maintaining cooked food in a ready-to-use condition'20138,096,231'Apparatus and method for maintaining cooked food in a ready-to-use condition'20127,971,523'Removable divider for food warming apparatus'20117,858,906'Apparatus and method for maintaining cooked food in a ready-to-use condition'2010

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2010–2013Patents assigned to PRINCE CASTLE INC (4)· patent assignee history
2010–2013Based in Carol Stream, IL, US· patent location history
2012–2013Patents assigned to GUASTA JACK (2)· patent assignee history
2012–2013Patents assigned to HARTFELDER CHARLES (2)· patent assignee history
2012–2013Patents assigned to SCHROEDER JEFFREY (2)· patent assignee history
2018–2020Patents assigned to Prince Castle LLC (16)· patent assignee history
2018–2020Based in Hanover Park, IL, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
Prince Castle LLC162018–2020
PRINCE CASTLE INC42010–2013
GUASTA JACK22012–2013
HARTFELDER CHARLESself22012–2013
SCHROEDER JEFFREY22012–2013
Locations
LocationPatentsSpan
Hanover Park, Illinois, US162018–2020
Carol Stream, Illinois, US42010–2013