Inventor · disambiguated record
Willi Dunwald
Also filed as: DUENWALD WILLI · DUNWALD WILLI · MERTEN RUDOLF · ZECHER WILFRIED
26 granted patents·219 citations·filing 1975–1991
96Inventor score
Files withBAYER AG26
Top patents by PatentIndex Score
26 records- 0182US4465839AProcess for the production of hydantoinsBAYER AG·Filed 1982·Granted Aug 14, 1984·31 cites·7 claims
- 0278US4096291AMelt coating composition and coating processBAYER AG·Filed 1975·Granted Jun 20, 1978·27 cites·17 claims
- 0375US4954577ALacquer binders, coating compositions and wire enamels based on polyamideimides and isocyanates carrying carbodiimide and/or uretone imine groupsBAYER AG·Filed 1988·Granted Sep 4, 1990·20 cites·6 claims
- 0473US4005056AProcess for the preparation of polyhydantoins and polyparanic acidsBAYER AG·Filed 1975·Granted Jan 25, 1977·19 cites·25 claims
- 0561US4088637AProcess for the production of polycondensates containing imide groupsBAYER AG·Filed 1976·Granted May 9, 1978·11 cites·14 claims
- 0657US4124568APolycondensatesBAYER AG·Filed 1977·Granted Nov 7, 1978·11 cites·12 claims
- 0754US4565843ALacquer solutions based on hydantoin group-containing polymersBAYER AG·Filed 1984·Granted Jan 21, 1986·11 cites·6 claims
- 0854US4444845AProcess for the production of coatings and the use of N,N',N"-tris-(2-hydroxyethyl)-isocyanurate as additives for polyurethane based wire lacquersBAYER AG·Filed 1982·Granted Apr 24, 1984·12 cites·10 claims
- 0952US4293669AHeat-resistant cross-linked polymers and the use thereof as bindersBAYER AG·Filed 1980·Granted Oct 6, 1981·10 cites·5 claims
- 1052US4100144AProcess for the preparation of oligourethanesBAYER AG·Filed 1977·Granted Jul 11, 1978·8 cites·10 claims
- 1151US5126479AProcess for the production of blocked polyisocyanates containing carbodiimide groups, the polyisocyanates obtainable by this process and their use for the production of plasticsBAYER AG·Filed 1989·Granted Jun 30, 1992·10 cites·1 claims
- 1249US4517353AProcess for preparation of hydantoin esters through a masked polyisocyanate-carbodiimide routeBAYER AG·Filed 1983·Granted May 14, 1985·8 cites·9 claims
- 1349US4246393AProcess for the preparation of poly(thio)hydantoinsBAYER AG·Filed 1978·Granted Jan 20, 1981·6 cites·6 claims
- 1448US4281095ACoating compositions obtained by reacting amino carboxylic acids derivatives with polyisocyanates and compounds containing carboxylic groups to produce polymers containing hydantoin rings and amide groupsBAYER AG·Filed 1979·Granted Jul 28, 1981·6 cites·9 claims
- 1547US4546162APolyamidoimides prepared from trimelitic acid anhydride, isocyanates and either lactams or polyamides using a mixture of diisocyanatodiphenylmethane and tolylene diisocyanatesBAYER AG·Filed 1984·Granted Oct 8, 1985·7 cites·9 claims
- 1645US4448942AProcess for the production of hydantoinsBAYER AG·Filed 1982·Granted May 15, 1984·2 cites·5 claims
- 1742US4289868APolyhydantoins from unsaturated carboxylic acids and polyiso(thio)cyanatesBAYER AG·Filed 1979·Granted Sep 15, 1981·1 cites·3 claims
- 1840US4472567AProcess for the production of polyamide imidesBAYER AG·Filed 1983·Granted Sep 18, 1984·4 cites·9 claims
- 1939US4853261AProcess for the preparation of coatings with hydantoin structures by the reaction of compounds containing carbodiimide groups with unsaturated carboxylic acidsBAYER AG·Filed 1988·Granted Aug 1, 1989·3 cites·2 claims
- 2039US4269750AProcess for the preparation of polymers containing hydantoin groupsBAYER AG·Filed 1979·Granted May 26, 1981·3 cites·11 claims
- 2136US4298515AProcess for the preparation of polymers containing hydantoin groupsBAYER AG·Filed 1979·Granted Nov 3, 1981·2 cites·10 claims
- 2235US4187365AProcess for the production of polycondensate containing cyclic imide groupsBAYER AG·Filed 1978·Granted Feb 5, 1980·2 cites·2 claims
- 2333US5126422ACoating compositions and coated heat-resistant substrates prepared therefromBAYER AG·Filed 1991·Granted Jun 30, 1992·3 cites·16 claims
- 2432US4465840AProcess for the production of (thio) hydantoinsBAYER AG·Filed 1982·Granted Aug 14, 1984·2 cites·7 claims
- 2530US5061515ALacquer binders, a process for coating heat resistant substrates and the coated substratesBAYER AG·Filed 1990·Granted Oct 29, 1991·0 cites·4 claims
- 2630US4212982APolyisocyanates with at least one hydantoin or thiohydantoin ring substituted by carboxylic acid amide groupsBAYER AG·Filed 1978·Granted Jul 15, 1980·0 cites·4 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →