Inventor
Donald Barby
Inventor
Great Barrow, GB
Overview
Patents· 5 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
A47Lprimary
A47LDomestic washing or cleaning13%
B08BCleaning in general13%
C01BNon-metallic elements13%
C01PIndexing scheme relating to structural and physical aspects of solid inorganic compounds13%
C08JWorking-up13%
C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients7%
C09CTreatment of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties7%
C11DDetergent compositions7%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests7%
Y10TTechnical subjects covered by former us classification7%
PatentTitleYear
4,797,310'Substrate carrying a porous polymeric material'19894,522,953'Low density porous cross-linked polymeric materials and their preparation and use as carriers for included liquids'19854,448,704'Article suitable for wiping hard surfaces'19844,127,641'Process for the preparation of precipitated silicas having morphology similar to pyrogenic silicas'19783,954,944'Fine silicas'1976Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1976Patents assigned to CROSFIELD JOSEPH & SONS (1)· patent assignee history
1976–1984Based in Great Barrow, GB· patent location history
1978Patents assigned to JOSEPH CROSFIELD AND SONS LIMI (1)· patent assignee history
1984–1989Patents assigned to LEVER BROTHERS LTD (3)· patent assignee history
1985–1989Based in Chester, GB· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| LEVER BROTHERS LTD | 3 | 1984–1989 |
| CROSFIELD JOSEPH & SONS | 1 | 1976 |
| JOSEPH CROSFIELD AND SONS LIMI | 1 | 1978 |
Locations
| Location | Patents | Span |
|---|---|---|
| Great Barrow, GB | 3 | 1976–1984 |
| Chester, GB | 2 | 1985–1989 |