Inventor
Edward A. Burkard
Inventor
East Amherst, NY, US
Overview
Patents· 9 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C04Bprimary
C04BLime, magnesia32%
A62DChemical means for extinguishing fires or for combating or protecting against harmful chemical agents14%
Y02WClimate change mitigation technologies related to wastewater treatment or waste management14%
B32BLayered products, i.e. products built-up of strata of flat or non-flat, e.g. cellular or honeycomb, form9%
E04CStructural elements9%
Y10TTechnical subjects covered by former us classification9%
B01FMixing, e.g. dissolving, emulsifying or dispersing5%
B28CPreparing clay5%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests5%
PatentTitleYear
6,221,151'Gypsum set accelerator and method of making the same'20015,858,083'Cementitious gypsum-containing binders and compositions and materials made therefrom'19995,718,759'Cementitious gypsum-containing compositions and materials made therefrom'19985,685,903'Cementitious gypsum-containing compositions and materials made therefrom'19974,948,647'Gypsum backer board'19904,564,544'Fire-resistant gypsum board'19864,502,901'Manufacture of gypsum board from FGD gypsum'19854,057,443'Foamed gypsum wallboard'19774,019,920'Gypsum set accelerator'1977Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1977–2001Patents assigned to NAT GYPSUM CO (9)· patent assignee history
1977–2001Based in East Amherst, NY, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| NAT GYPSUM CO | 9 | 1977–2001 |
Locations
| Location | Patents | Span |
|---|---|---|
| East Amherst, New York, US | 9 | 1977–2001 |