Inventor
John D. Johnston
Inventor
St. Petersburg, FL, US
Overview
Patents· 5 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
A44Cprimary
A44CPersonal adornments, e.g. jewellery20%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests20%
A23KFodder10%
B23DPlaning10%
B28DWorking stone or stone-like materials10%
C05CNitrogenous fertilisers10%
C05DInorganic fertilisers not covered by subclasses c05b, c05c10%
C11BProducing, e.g. by pressing raw materials or by extraction from waste materials, refining or preserving fats, fatty substances, e.g. lanolin, fatty oils or waxes10%
PatentTitleYear
6,928,835'Pop beads having elongated necks'20056,401,488'Pop beads having elongated necks'20025,498,434'Synergistic compositions for extending animal feed shelf life'19964,832,411'Method and apparatus for cutting reinforced concrete'19894,277,253'Granulating an aqueous dispersion of ammonium and potassium salts'1981Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1981Patents assigned to ADELAIDE & WALLAROO FERTILIZER (1)· patent assignee history
1981Based in Elizabeth Park, AU· patent location history
1989Patents assigned to JOHNSTON EDWARD P (1)· patent assignee history
1989Patents assigned to JOHNSTON JOHN D (1)· patent assignee history
1989Based in Winnipeg, Manitoba, CA· patent location history
1996Patents assigned to GEO PFAU S SONS COMPANY INC (1)· patent assignee history
1996Based in Jeffersonville, IN, US· patent location history
2002Patents assigned to COUSIN CORP OF AMERICA (1)· patent assignee history
2002–2005Based in St. Petersburg, FL, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| ADELAIDE & WALLAROO FERTILIZER | 1 | 1981 |
| COUSIN CORP OF AMERICA | 1 | 2002 |
| GEO PFAU S SONS COMPANY INC | 1 | 1996 |
| JOHNSTON EDWARD P | 1 | 1989 |
| JOHNSTON JOHN Dself | 1 | 1989 |
Locations
| Location | Patents | Span |
|---|---|---|
| St. Petersburg, Florida, US | 2 | 2002–2005 |
| Jeffersonville, IN, US | 1 | 1996 |
| Winnipeg, Manitoba, CA | 1 | 1989 |
| Elizabeth Park, AU | 1 | 1981 |