Inventor
Philip H. Rittmueller
Inventor
St. Charles, IL, US
Overview
Patents· 8 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H04Kprimary
H04KSecret communication33%
H04NPictorial communication, e.g. television33%
B60NSeats specially adapted for vehicles13%
B60RVehicles, vehicle fittings, or vehicle parts, not otherwise provided for13%
H04MTelephonic communication7%
PatentTitleYear
6,696,948'Wet seat protection for air bag control occupant detection'20045,948,031'Vehicle passenger sensing system and method'19995,406,627'Digital data cryptographic system'19955,267,312'Audio signal cryptographic system'19935,185,794'System and method for scrambling and/or descrambling a video signal'19935,166,976'System and method for detection of a pulse within a video signal'19925,091,938'System and method for transmitting entertainment information to authorized ones of plural receivers'19924,897,862'Acoustic alarm detection system for telephone activation'1990Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1990Patents assigned to NEC CORP (1)· patent assignee history
1990–2004Based in St. Charles, IL, US· patent location history
1992–1995Patents assigned to NIPPON DENKI HOME ELECTRONICS (5)· patent assignee history
1999Patents assigned to NEC TECHNOLOGIES INC (1)· patent assignee history
2004Patents assigned to ELESYS NORTH AMERICA INC (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| NIPPON DENKI HOME ELECTRONICS | 5 | 1992–1995 |
| ELESYS NORTH AMERICA INC | 1 | 2004 |
| NEC CORP | 1 | 1990 |
| NEC TECHNOLOGIES INC | 1 | 1999 |
Locations
| Location | Patents | Span |
|---|---|---|
| St. Charles, Illinois, US | 8 | 1990–2004 |