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Official data from INPI

PROCESSO PARA DESCARREGAR ATRAVES DE UMA VALVULA DE DESCARGA UMA LAMA CONTENDO PARTICULAS POLIMERICAS

ConcedidaInvention Patent

Application data

Number

PI7901628

Type

Invention Patent

Filing

03/17/1978

Publication

-

Progress at the INPI

  1. Filing03/17/78
  2. Publication
  3. Examination10/20/81
  4. Allowance12/07/82
  5. Grant06/28/83
  6. Terminated01/28/92

The patent was granted on 06/28/1983 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: 06/28/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

SUMITOMO CHEMICAL CO

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Inventors

H. S. (pessoa física)

I. S. (pessoa física)

M. K. (pessoa física)

O. T. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

06/28/1983

RPI 662

Notificação para pagamento de retribuição

#13.1

05/17/1983

RPI 656

Republicação - classificação IPC

#15.11

02/08/1983

RPI 642

Deferimento

#9.1

12/07/1982

RPI 633

6.2

04/27/1982

RPI 601

Solicitação de exame técnico

#4.1

10/20/1981

RPI 574

Anuidade - prazo legal encerrado

#18.2

01/28/1992

RPI 1104

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