Inventor · disambiguated record
Christian W. Johnston
Also filed as: JOHNSTON CHRISTIAN · JOHNSTON CHRISTIAN W
20 granted patents·1,211 citations·filing 1980–2022
97Inventor score
Top patents by PatentIndex Score
20 records- 0198US5120816AHydrophilic polyurethanes of improved strengthTYNDALE PLAINS HUNTER LTD·Filed 1990·Granted Jun 9, 1992·151 cites·21 claims
- 0296US4454309APolyurethane polyene compositionsTYNDALE PLAINS HUNTER LTD·Filed 1982·Granted Jun 12, 1984·86 cites·13 claims
- 0393US5000955AThermally reversible polyurethane hydrogels and cosmetic, biological and medical usesTYNDALE PLAINS HUNTER LTD·Filed 1990·Granted Mar 19, 1991·122 cites·30 claims
- 0493US4496535APolyurethane polyene compositionsTYNDALE PLAINS HUNTER LTD·Filed 1984·Granted Jan 29, 1985·120 cites·23 claims
- 0592US4743673AHydrophilic carboxy polyurethanesTYNDALE PLAINS HUNTER LTD·Filed 1986·Granted May 10, 1988·132 cites·37 claims
- 0691USD980102SWatchGLD LLC·Filed 2022·Granted Mar 7, 2023·12 cites·1 claims
- 0791US4439583APolyurethane diacrylate compositions useful in forming canulaeTYNDALE PLAINS HUNTER LTD·Filed 1982·Granted Mar 27, 1984·90 cites·19 claims
- 0889USD950396SWatchGLD LLC·Filed 2020·Granted May 3, 2022·13 cites·1 claims
- 0989US4439585APolyurethane diacrylate compositions as carrier for pharmacological agentsTYNDALE PLAINS HUNTER LTD·Filed 1982·Granted Mar 27, 1984·75 cites·18 claims
- 1089US4359558APolyurethane diacrylate compositionsTYNDALE PLAINS HUNTER LTD·Filed 1980·Granted Nov 16, 1982·79 cites·15 claims
- 1185US4780512APolyurethane acrylate compositionsTYNDALE PLAINS HUNTER LTD·Filed 1987·Granted Oct 25, 1988·32 cites·12 claims
- 1285US4424305ASurgical implants formed of polyurethane diacrylate compositionsTYNDALE PLAINS HUNTER LTD·Filed 1982·Granted Jan 3, 1984·57 cites·19 claims
- 1383USD990328SWatchGLD LLC·Filed 2022·Granted Jun 27, 2023·6 cites·1 claims
- 1482US4451635APolyurethane quaternary ammonium saltsTYNDALE PLAINS HUNTER LTD·Filed 1982·Granted May 29, 1984·28 cites·2 claims
- 1577US4408023APolyurethane diacrylate compositions useful for contact lenses and the likeTYNDALE PLAINS HUNTER LTD·Filed 1982·Granted Oct 4, 1983·81 cites·19 claims
- 1676US4490423APolyurethane polyene compositionsTYNDALE PLAINS HUNTER LTD·Filed 1984·Granted Dec 25, 1984·28 cites·6 claims
- 1771US4439584AGas and ion permeable membranes formed of polyurethane diacrylate compositionsTYNDALE PLAINS HUNTER LTD·Filed 1982·Granted Mar 27, 1984·29 cites·19 claims
- 1866US5334691AHydrophilic polyurethanes of improved strengthTYNDALE PLAINS HUNTER LTD·Filed 1992·Granted Aug 2, 1994·64 cites·8 claims
- 1954USD919474SJewelry clasp for chainGLD LLC·Filed 2019·Granted May 18, 2021·6 cites·1 claims
- 2040USD1059183SWatchGLD LLC·Filed 2022·Granted Jan 28, 2025·0 cites·1 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →