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Official data from INPI

PROCESSO PARA PRODUZIR UMA SOLUÇÃO DILUÍDA DE POLIACRILAMIDA E PROCESSO PARA PRODUZIR UM FLUIDO E IMPULSIONAMENTO POR INJEÇÃO DE POLIACRILAMIDA.

Em AnáliseInvention Patent

Application data

Number

PI8505937

Type

Invention Patent

Filing

11/27/1985

Publication

08/19/1986

Progress at the INPI

Awaiting grant fee payment
  1. Filing11/27/85
  2. Publication08/19/86
  3. Examination09/06/88
  4. Allowance10/02/90
  5. Grant
  6. In force

The application was allowed by the INPI on 10/02/1990. The grant of the letters patent is being processed.

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Latest action published by the INPI: 09/06/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

American Cyanamid Company

US

See this company's full portfolio

Inventors

J. W. (pessoa física)

US

J. P. (pessoa física)

US

W. C. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

675.491 · 11/28/1984

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

09/06/1988

RPI 933

Publicação do pedido de patente

#3.1

08/19/1986

RPI 826

Pedido de patente depositado

#2.1

02/12/1986

RPI 799

Republicação - classificação IPC

#15.11

Procedimento automático de reclassificação. As classificações IPC anteriores eram: C09K 7/02; C08F 6/24; C08F 220/56.

03/27/2018

RPI 2464

Retificação

#15.3

01/15/1991

RPI 1050

Deferimento

#9.1

10/02/1990

RPI 1035

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