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Official data from INPI

PROCESSO DE ALVEJAMENTO DE POLPA DE CELULOSE

Em AnáliseInvention Patent

Application data

Number

PI7601443

Type

Invention Patent

Filing

03/11/1975

Publication

-

Progress at the INPI

  1. Filing03/11/75
  2. Publication
  3. Examination
  4. Allowance
  5. Grant01/26/82
  6. Terminated05/10/88

The patent was granted on 01/26/1982 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 05/10/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

ERCO ENVIROTECH LTD

Inventors

R. W. (pessoa física)

R. D. (pessoa física)

R. G. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

05/10/1988

RPI 916

Concessão da patente

#16.1

01/26/1982

RPI 588

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