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Official data from INPI

BLOCO QUE COMPREENDE UMA TELA SUBSTANCIALMENTE CONTÍNUA DOBRADA EM LEQUE, DE LARGURA UNIFORME, QUE É SEPARÁVEL EM FOLHAS

Arquivada/ExtintaInvention Patent

Application data

Number

PI8707356

Type

Invention Patent

Filing

05/21/1987

Publication

09/13/1988

Progress at the INPI

  1. Filing05/21/87
  2. Publication09/13/88
  3. Examination01/09/90
  4. Allowance06/30/92
  5. Grant03/30/93
  6. Expired07/29/08

The letters patent expired on 07/29/2008: 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: 09/13/1988. 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

T. M. (pessoa física)

US

Technical data

Priority claims

US

877.371 · 06/23/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Notificação de entrada na fase nacional - PCT

#1.3

09/13/1988

RPI 934

Carta-patente expirada

#21.1

Patente extinta em 21/05/2002

07/29/2008

RPI 1960

Concessão da patente

#16.1

03/30/1993

RPI 1165

Notificação para pagamento de retribuição

#13.1

11/17/1992

RPI 1146

Deferimento

#9.1

06/30/1992

RPI 1126

Conhecimento de parecer técnico

#7.1

11/05/1991

RPI 1092

Solicitação de exame técnico

#4.1

01/09/1990

RPI 1001

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