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Official data from INPI

FECHO PARA USO EM UM RECIPIENTE

Arquivada/ExtintaInvention Patent

Application data

Number

PI9001322

Type

Invention Patent

Filing

03/21/1990

Publication

04/02/1991

Progress at the INPI

  1. Filing03/21/90
  2. Publication04/02/91
  3. Examination07/20/93
  4. Allowance05/31/94
  5. Grant12/27/94
  6. Expired05/18/10

The letters patent expired on 05/18/2010: 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: 05/18/2010. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Minnesota Mining and Manufacturing Company

US

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Inventors

R. H. (pessoa física)

US

R. A. (pessoa física)

US

S. W. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

07/325,272 · 03/22/1989

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 21/03/2005

05/18/2010

RPI 2054

Concessão da patente

#16.1

12/27/1994

RPI 1256

Notificação para pagamento de retribuição

#13.1

10/04/1994

RPI 1244

Deferimento

#9.1

05/31/1994

RPI 1226

Solicitação de exame técnico

#4.1

07/20/1993

RPI 1181

Publicação do pedido de patente

#3.1

04/02/1991

RPI 1061

Pedido de patente depositado

#2.1

08/07/1990

RPI 1027

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