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Official data from INPI

COMPOSIÇÃO COMPREENDENDO POLIESTIRENO, POLIOLEFINA E COPOLÍMEROS EM BLOCO

ConcedidaInvention Patent

Application data

Number

PI7901893

Type

Invention Patent

Filing

03/28/1979

Publication

-

Progress at the INPI

  1. Filing03/28/79
  2. Publication
  3. Examination12/29/81
  4. Allowance05/17/88
  5. Grant10/25/88
  6. Expired06/21/94

The letters patent expired on 06/21/1994: 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: 10/25/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Shell Internationale Research Maatschappij B.V

NL

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Inventors

G. H. (pessoa física)

US

L. G. (pessoa física)

Technical data

Priority claims

US

892045 · 03/30/1978

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

10/25/1988

RPI 940

Notificação para pagamento de retribuição

#13.1

09/06/1988

RPI 933

Deferimento

#9.1

05/17/1988

RPI 917

Conhecimento de parecer técnico

#7.1

04/30/1985

RPI 758

6.2

08/10/1982

RPI 616

Pedido de certificado de adição de invenção

#5.1

06/01/1982

RPI 606

Solicitação de exame técnico

#4.1

12/29/1981

RPI 584

Carta-patente expirada

#21.1

06/21/1994

RPI 1229

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