Diffracto Ltd.
Windsor, CA· latest recorded location
Diffracto Ltd. is named on 65 US grants and 0 published applications in this corpus. Its most frequent classification is G01B (Measuring length, thickness or similar linear dimensions).
- Granted patents
- 65
- Published applications
- 0
- Inventors
- 16
- Granted in 2026 so far
- 0
- Most recent grant
- 3 Apr 2001
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 3 | 0 |
| 1982 | 2 | 0 |
| 1983 | 7 | 0 |
| 1984 | 6 | 0 |
| 1985 | 5 | 0 |
| 1986 | 5 | 0 |
| 1987 | 8 | 0 |
| 1988 | 7 | 0 |
| 1989 | 7 | 0 |
| 1990 | 2 | 0 |
| 1991 | 3 | 0 |
| 1992 | 4 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
By publication year.
Technology areas
Share of 65 documents
- G01BMeasuring length, thickness or similar linear dimensions40
- G01NInvestigating or analysing materials by determining their chemical or physical properties15
- B25JManipulators14
- G05BControl or regulating systems in general12
- G01SRadio direction-finding10
- A01BSoil working in agriculture or forestry6
- B23PMetal-working not otherwise provided for6
- Y10TTechnical subjects covered by former us classification6
- G01MTesting static or dynamic balance of machines or structures5
- Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests5
Recent patents
- Method and apparatus for electro-optically determining the dimension, location and attitude of objects3 Apr 2001US 6,211,506 B1
- Method and apparatus for positioning a member relative to an object surface3 Oct 2000US 6,127,689 A
- System and method for graphical image data acquistion, storage, and retrieval11 Aug 1998US 5,793,647 A
- Methods and apparatus for retroreflective surface inspection and distortion measurement27 Apr 1993US 5,206,700 A
- Surface inspection using retro-reflective light field1 Dec 1992US 5,168,322 A
No published applications.
Most cited
By later US patents
- Robot tractors246US 4,482,960 A1984
- Robot tractors231US 4,769,700 A1988
- Triangulation data integrity216US 4,705,395 A1987
- Electro-optical sensors for manual control193US 4,761,072 A1988
- Method and apparatus for electro-optically determining the dimension, location and attitude of objects including light spot centroid determination149US 5,164,579 A1992