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Official data from INPI

PROCESSO PARA CLORACAO EM MASSA DE POLIETILENO SOLIDO FINAMENTE DIVIDIDO E POLIETILENO CLORADO OBTIDO PELO PROCESSO

Em AnáliseInvention Patent

Application data

Number

PI7800912

Type

Invention Patent

Filing

02/16/1977

Publication

-

Progress at the INPI

  1. Filing02/16/77
  2. Publication
  3. Examination
  4. Allowance03/01/83
  5. Grant08/30/83
  6. Terminated10/03/89

The patent was granted on 08/30/1983 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

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Latest action published by the INPI: 10/03/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

STAMICARBON

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Inventors

A. P. (pessoa física)

B. W. (pessoa física)

D. W. (pessoa física)

S. L. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

10/03/1989

RPI 989

Concessão da patente

#16.1

08/30/1983

RPI 671

Notificação para pagamento de retribuição

#13.1

06/21/1983

RPI 661

Deferimento

#9.1

03/01/1983

RPI 645

Exigência - art. 36 da LPI

#6.1

06/15/1982

RPI 608

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