Inventor
Charles F. Raasch
Inventor
Lake Forest, CA, US
Overview
Patents· 21 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H04Mprimary
H04MTelephonic communication20%
G06FElectric digital data processing18%
H04LTransmission of digital information, e.g. telegraphic communication18%
G01SRadio direction-finding5%
G01VGeophysics5%
G06QInformation and communication technology [ict] specially adapted for administrative, commercial, financial, managerial or supervisory purposes5%
G08BSignalling systems, e.g. personal calling systems5%
H03MCoding5%
H04WWireless communication networks5%
Y02DClimate change mitigation technologies in information and communication technologies [ict], i.e. information and communication technologies aiming at the reduction of their own energy use5%
PatentTitleYear
10,930,138Apparatus and method for determining mounting state of a trailer tracking device202110,636,280Apparatus and method for determining mounting state of a trailer tracking device202010,605,847Verification of installation of vehicle starter disable and enable circuit20207,634,070'Modem with hold and quick connect functionality'20097,587,034'Use of modem on hold for network management and telephone access'20097,443,966'Using modems to place modem connections on hold and to maintain upper layer network connection'20086,996,167'Modem identification and diagnostics'20066,980,590'Processing diagnostic and identification data in an analog modem system'20056,912,276'Modem on hold'20056,714,645'Telephone line interface circuit without hookswitch relay'20046,690,776'Communication on hold notifier'20046,100,875'Keyboard pointing device'20005,717,565'Easily changeable notebook keyboard'19985,642,110'Memory mapped keyboard controller'19975,408,624'Method and apparatus for down-loading instructions from a host computer system to a memory in a peripheral controller for execution by a core microprocessor in the peripheral controller'19955,402,492'Security system for a stand-alone computer'19955,333,273'Protected hot key function for microprocessor-based computer system'19945,280,283'Memory mapped keyboard controller'19945,261,114'Method and apparatus for providing down-loaded instructions for execution by a peripheral controller'19935,237,692'Internal interrupt controller for a peripheral controller'19935,031,227'Edge enhancement and smoothing in digital images'1991Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1991–1997Based in El Toro, CA, US· patent location history
1993–2000Patents assigned to AST RESEARCH INC (9)· patent assignee history
1995Based in Toluca Lake, CA, US· patent location history
1998–2009Based in Lake Forest, CA, US· patent location history
2004Patents assigned to CONEXANT SYSTEMS INC (2)· patent assignee history
2005–2009Patents assigned to SILICON LAB INC (4)· patent assignee history
2005–2006Patents assigned to MINDSPEED TECH INC (2)· patent assignee history
2020–2021Patents assigned to SPIREON INC (3)· patent assignee history
2020–2021Based in Foothill Ranch, CA, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| AST RESEARCH INC | 9 | 1993–2000 |
| SILICON LAB INC | 4 | 2005–2009 |
| SPIREON INC | 3 | 2020–2021 |
| CONEXANT SYSTEMS INC | 2 | 2004 |
| MINDSPEED TECH INC | 2 | 2005–2006 |
Locations
| Location | Patents | Span |
|---|---|---|
| Lake Forest, California, US | 10 | 1998–2009 |
| El Toro, California, US | 7 | 1991–1997 |
| Foothill Ranch, California, US | 3 | 2020–2021 |
| Toluca Lake, California, US | 1 | 1995 |