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Official data from INPI

PROCESSO PARA FABRICAR DISPOSITIVOS DE LIBERAÇÃO DE LÍQUIDOS

Prazo de SigiloInvention Patent

Application data

Number

PI8903120

Type

Invention Patent

Filing

06/26/1989

Publication

02/06/1990

Progress at the INPI

  1. Filing06/26/89
  2. Publication02/06/90
  3. Examination05/19/92
  4. Allowance09/29/98
  5. Grant02/23/99
  6. Expired12/26/12

The letters patent expired on 12/26/2012: 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: 08/22/1989. 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

J. C. (pessoa física)

US

J. B. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

211,870 · 06/27/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de patente depositado

#2.1

08/22/1989

RPI 983

Carta-patente expirada

#21.1

Patente extinta em 26/06/2009

12/26/2012

RPI 2190

Concessão da patente

#16.1

02/23/1999

RPI 1468

Deferimento

#9.1

09/29/1998

RPI 1449

Exigência - art. 36 da LPI

#6.1

05/26/1998

RPI 1431

Solicitação de exame técnico

#4.1

05/19/1992

RPI 1120

Publicação do pedido de patente

#3.1

02/06/1990

RPI 1005

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