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Official data from INPI

ARTIGO REVESTIDO E PROCESSO PARA SUA FORMAÇÃO

Em AnáliseInvention Patent

Application data

Number

PI8600124

Type

Invention Patent

Filing

01/15/1986

Publication

09/23/1986

Progress at the INPI

  1. Filing01/15/86
  2. Publication09/23/86
  3. Examination10/04/88
  4. Allowance03/16/93
  5. Grant08/31/93
  6. Expired07/22/08

The letters patent expired on 07/22/2008: 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: 10/04/1988. 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

H. S. (pessoa física)

US

R. L. (pessoa física)

US

S. K. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

694.945 · 01/25/1985

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

10/04/1988

RPI 937

Publicação do pedido de patente

#3.1

09/23/1986

RPI 831

Pedido de patente depositado

#2.1

04/15/1986

RPI 808

Carta-patente expirada

#21.1

Patente extinta em 15/01/2001

07/22/2008

RPI 1959

Concessão da patente

#16.1

08/31/1993

RPI 1187

Notificação para pagamento de retribuição

#13.1

07/06/1993

RPI 1179

Deferimento

#9.1

03/16/1993

RPI 1163

Exigência - art. 36 da LPI

#6.1

09/01/1992

RPI 1135

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