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Official data from INPI

PROCESSO DE PREPARACAO CONTINUA DE POLIOLEFINAS

ConcedidaInvention Patent

Application data

Number

PI7803876

Type

Invention Patent

Filing

06/18/1977

Publication

-

Progress at the INPI

  1. Filing06/18/77
  2. Publication
  3. Examination
  4. Allowance03/01/83
  5. Grant03/29/88
  6. Expired11/30/93

The letters patent expired on 11/30/1993: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

Talk to a specialist

Latest action published by the INPI: 03/29/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

NIPPON OIL CO LTD

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Inventors

H. T. (pessoa física)

K. K. (pessoa física)

K. N. (pessoa física)

M. K. (pessoa física)

M. Y. (pessoa física)

M. M. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

03/29/1988

RPI 910

Notificação para pagamento de retribuição

#13.1

09/15/1987

RPI 882

110

06/23/1987

RPI 870

120

08/13/1985

RPI 773

120

09/25/1984

RPI 727

Recurso

#12.1

06/21/1983

RPI 661

Deferimento

#9.1

03/01/1983

RPI 645

6.2

11/10/1981

RPI 577

Carta-patente expirada

#21.1

11/30/1993

RPI 1200

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