John M. Casberg has been granted 13 US patents while listed as an inventor at Olin . The first was granted in 1980 and the most recent in May 1993. John M. Casberg ranks #362,438 of 4,157,543 US inventors in our database (top 8.7%). Patent records list John M. Casberg in Cheshire, CT, US.
Patents per Year Patents granted per year, 1980 to 1993 Bar chart with a peak of 3 patents in 1990. peak 3 1980: 1 patents 1980 1982: 1 patents 1982 1984: 1 patents 1984 1985: 1 patents 1985 1986: 1 patents 1986 1989: 1 patents 1989 1990: 3 patents 1990 1992: 3 patents 1992 1993: 1 patents 1993
Issued Patents All Time
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Showing 1–13 of 13 patents
Patent # Title Co-Inventors Date Approx Value ⓘ
D335704 Partially shell encased swimming pool chemical tablet — 1993-05-18
5137731 Chemical tablet with central hole and partially exposed top and bottom — 1992-08-11
$1,753,000
D328333 Container for swimming pool chemical tablets for use in skimmers, floaters or feeders — 1992-07-28
D325619 Shell encased pool chemical tablet — 1992-04-21
D309493 Chlorine dispenser for swimming pools — 1990-07-24
4928813 Encased pool chemical capsule with extended ends and method of making the same — 1990-05-29
$1,478,000
4923618 Method of chlorinating a swimming pool David E. Michaels 1990-05-08
$1,339,000
4876003 Encased pool chemical tablet with domed ends — 1989-10-24
$2,247,000
D283649 Swimming pool chemical tablet — 1986-04-29
4546503 Pool chemical tablet and container — 1985-10-15
$3,835,000
4444316 Gas scavenger agents for containers of solid chloroisocyanurates — 1984-04-24
$2,061,000
4349493 Briquets of hydrated calcium hypochlorite Clair H. Putnam 1982-09-14
$765,000
4208376 Water treatment chemical dispenser with control tube Arlon G. Sangster , Joseph J. Tepas, Jr. 1980-06-17
$4,074,000