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Official data from INPI

PROCESSO PARA A PREPARAÇÃO DE POLÍMEROS DE PERFLÚOR-POLIÉTER TELEQUÉLICO

Em ExigênciaInvention Patent

Application data

Number

PI8300187

Type

Invention Patent

Filing

01/17/1983

Publication

10/11/1983

Progress at the INPI

  1. Filing01/17/83
  2. Publication10/11/83
  3. Examination02/04/86
  4. Allowance10/02/90
  5. Grant04/30/91
  6. Expired07/01/08

The letters patent expired on 07/01/2008: 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: 06/14/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Minnesota Mining and Manufacturing Company

US

See this company's full portfolio

Inventors

D. R. (pessoa física)

US

J. I. (pessoa física)

US

Technical data

Priority claims

US

340.473 · 01/18/1982

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Exigência - art. 36 da LPI

#6.1

06/14/1988

RPI 921

Solicitação de exame técnico

#4.1

02/04/1986

RPI 798

Publicação do pedido de patente

#3.1

10/11/1983

RPI 677

Pedido de patente depositado

#2.1

03/01/1983

RPI 645

Carta-patente expirada

#21.1

Patente extinta em 17/01/98

07/01/2008

RPI 1956

Concessão da patente

#16.1

04/30/1991

RPI 1065

Notificação para pagamento de retribuição

#13.1

01/15/1991

RPI 1050

Deferimento

#9.1

10/02/1990

RPI 1035

Exigência - art. 36 da LPI

#6.1

04/03/1990

RPI 1012

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