Assignee
KAMYR AB
97 granted patents·1,758 citations·filing 1974–1997
Top patents by PatentIndex Score
97 records- 0197US5209641AApparatus for fluidizing, degassing and pumping a suspension of fibrous cellulose materialKAMYR AB·Filed 1991·Granted May 11, 1993·141 cites·9 claims
- 0293US4174997AMethod and apparatus for continuous hydrolysis of cellulosic fiber materialKAMYR AB·Filed 1974·Granted Nov 20, 1979·43 cites·8 claims
- 0392US4093506AMethod and apparatus for effecting even distribution and mixing of high consistency pulp and treatment fluidKAMYR AB·Filed 1976·Granted Jun 6, 1978·67 cites·10 claims
- 0491US5234550AWall means having slots between adjacent bars for withdrawing liquid from particle materialKAMYR AB·Filed 1991·Granted Aug 10, 1993·46 cites·7 claims
- 0591US5080755AProcess for the continuous digestion of cellulosic fiber materialKAMYR AB·Filed 1989·Granted Jan 14, 1992·46 cites·4 claims
- 0690US4419184AMethod for control of chemicals during gas treatment of suspensionsKAMYR AB·Filed 1981·Granted Dec 6, 1983·40 cites·15 claims
- 0790US4028171AMethod for continuous treatment of fiber material in a vertical arrayKAMYR AB·Filed 1975·Granted Jun 7, 1977·33 cites·5 claims
- 0888US4339206AMixing apparatus for mixing a fluid fiber suspension with a treatment fluid suspensionKAMYR AB·Filed 1980·Granted Jul 13, 1982·40 cites·6 claims
- 0987US4435193AControlling operation of a centrifugal pumpKAMYR AB·Filed 1982·Granted Mar 6, 1984·64 cites·25 claims
- 1086US5366288AApparatus for mixing a suspension of cellulosic fibrous material and fluidKAMYR AB·Filed 1992·Granted Nov 22, 1994·73 cites·18 claims
- 1186US5039320AApparatus for fluidizing, degassing and pumping a suspension of fibrous cellulose materialKAMYR AB·Filed 1989·Granted Aug 13, 1991·33 cites·15 claims
- 1283US5053108AHigh sulfidity cook for paper pulp using black liquor sulfonization of steamed chipsKAMYR AB·Filed 1989·Granted Oct 1, 1991·26 cites·7 claims
- 1382US4776758ACombined fluidizing and vacuum pumpKAMYR AB·Filed 1987·Granted Oct 11, 1988·43 cites·17 claims
- 1481US5217575AProcess for oxygen bleaching using two vertical reactorsKAMYR AB·Filed 1992·Granted Jun 8, 1993·29 cites·3 claims
- 1581US4280902ASeparation of dense impurities from a fluidKAMYR AB·Filed 1980·Granted Jul 28, 1981·34 cites·21 claims
- 1681US3963561ARecirculation of unconsumed oxygen pulp bleaching gasKAMYR AB·Filed 1974·Granted Jun 15, 1976·29 cites·4 claims
- 1778US5669948ASeparating arrangement and method for counteracting foam formationKAMYR AB·Filed 1992·Granted Sep 23, 1997·34 cites·20 claims
- 1878US4750340AApparatus for treating a fibre suspensionKAMYR AB·Filed 1986·Granted Jun 14, 1988·28 cites·14 claims
- 1977US5039022ARefiner element pattern achieving successive compression before impactKAMYR AB·Filed 1989·Granted Aug 13, 1991·21 cites·3 claims
- 2077US4834547AApparatus for mixing chemicals in fibre suspensionsKAMYR AB·Filed 1986·Granted May 30, 1989·21 cites·7 claims
- 2176US4986480AMethod and apparatus for feeding a conical refinerKAMYR AB·Filed 1989·Granted Jan 22, 1991·19 cites·17 claims
- 2275US4941970AApparatus for dividing a suspension of fibrous cellulose pulpKAMYR AB·Filed 1988·Granted Jul 17, 1990·21 cites·17 claims
- 2375US4826398AMedium consistency pump with self-feedingKAMYR AB·Filed 1987·Granted May 2, 1989·32 cites·28 claims
- 2474US4699324ACombined screening and reject reductionKAMYR AB·Filed 1986·Granted Oct 13, 1987·20 cites·18 claims
- 2574US4680108AScreening deviceKAMYR AB·Filed 1986·Granted Jul 14, 1987·20 cites·20 claims
- 2673US4991720AApparatus for dividing a suspension of fibrous cellulose pulpKAMYR AB·Filed 1989·Granted Feb 12, 1991·20 cites·5 claims
- 2773US4754935AMethod and apparatus for refining fibrous materialKAMYR AB·Filed 1987·Granted Jul 5, 1988·17 cites·20 claims
- 2873US4637878AReciprocal movable screens in a vertically elongated vesselKAMYR AB·Filed 1982·Granted Jan 20, 1987·15 cites·20 claims
- 2972US4804912AApparatus for electromagnetically measuring the distance between two opposing grinding surfacesKAMYR AB·Filed 1987·Granted Feb 14, 1989·32 cites·13 claims
- 3069US5192396AProcess for the continuous digestion of cellulosic fiber materialKAMYR AB·Filed 1991·Granted Mar 9, 1993·19 cites·20 claims
- 3169US4737274ATramp material separatorKAMYR AB·Filed 1986·Granted Apr 12, 1988·15 cites·20 claims
- 3268US4368628AApparatus for treatment of suspensions in movementKAMYR AB·Filed 1981·Granted Jan 18, 1983·17 cites·20 claims
- 3367US4057461AMethod and apparatus for impregnation of fiber material by pressure pulsationKAMYR AB·Filed 1976·Granted Nov 8, 1977·11 cites·15 claims
- 3466US4922989ATreatment of mechanical pulp to remove resinKAMYR AB·Filed 1985·Granted May 8, 1990·17 cites·19 claims
- 3566US4892619AMethod of production of fiber containing pulp with different raw materialsKAMYR AB·Filed 1988·Granted Jan 9, 1990·18 cites·14 claims
- 3666US4710268AMethod for regulating the pressure of blow-through discharge steam from a reboiler of process steam produced during production of mechanical pulpKAMYR AB·Filed 1986·Granted Dec 1, 1987·13 cites·10 claims
- 3765US4529482AApparatus for the treatment of pulp having oscillating distributing wiper bladesKAMYR AB·Filed 1980·Granted Jul 16, 1985·11 cites·7 claims
- 3864US5050380AMeans for receiving and subsequently emptying hydraulic fluid from a hydraulic systemKAMYR AB·Filed 1990·Granted Sep 24, 1991·20 cites·11 claims
- 3963US4968417AApparatus for screening a suspension of fibrous cellulose pulpKAMYR AB·Filed 1989·Granted Nov 6, 1990·13 cites·15 claims
- 4062US4793161AEffective diffuser/thickener screen backflushingKAMYR AB·Filed 1987·Granted Dec 27, 1988·16 cites·12 claims
- 4162US4556494AMethod of diffusion washing or thickening of pulpKAMYR AB·Filed 1985·Granted Dec 3, 1985·11 cites·3 claims
- 4260US4276167ADiffuser arrangementsKAMYR AB·Filed 1979·Granted Jun 30, 1981·8 cites·22 claims
- 4359US5366347ASuspension pump with built-in variably eccentric liquid ring pumpKAMYR AB·Filed 1991·Granted Nov 22, 1994·18 cites·8 claims
- 4459US4913806AApparatus for screening a suspension of fibrous cellulose pulpKAMYR AB·Filed 1989·Granted Apr 3, 1990·11 cites·8 claims
- 4559US4303508AScreening deviceKAMYR AB·Filed 1980·Granted Dec 1, 1981·18 cites·11 claims
- 4659US4078964AMethod and apparatus for filling a pressure treatment vessel with a fiber material and liquid mixtureKAMYR AB·Filed 1975·Granted Mar 14, 1978·9 cites·8 claims
- 4758US5069752ADigester screen switchingKAMYR AB·Filed 1990·Granted Dec 3, 1991·13 cites·8 claims
- 4858US5034128AApparatus for dewatering pulpKAMYR AB·Filed 1990·Granted Jul 23, 1991·14 cites·9 claims
- 4957US4535497AMethod for treatment of suspensions in movementKAMYR AB·Filed 1982·Granted Aug 20, 1985·15 cites·4 claims
- 5056US4427489AMixing device and methodKAMYR AB·Filed 1981·Granted Jan 24, 1984·17 cites·16 claims
Showing the top 50 of 97 patent records by PatentIndex Score.
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