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Official data from INPI

PROCESSO PARA CONTROLAR COMPOSIÇÕES DE REVESTIMENTO FUNCIONAIS

PublicadaInvention Patent

Application data

Number

PI8801627

Type

Invention Patent

Filing

04/06/1988

Publication

11/07/1989

Progress at the INPI

  1. Filing04/06/88
  2. Publication11/07/89
  3. Examination09/10/91
  4. Allowance11/03/98
  5. Grant10/19/99
  6. Expired12/11/12

The letters patent expired on 12/11/2012: 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: 11/07/1989. 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

G. T. (pessoa física)

US

K. M. (pessoa física)

US

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

11/07/1989

RPI 994

Pedido de patente depositado

#2.1

08/02/1988

RPI 928

Carta-patente expirada

#21.1

Patente extinta em 19/10/2009

12/11/2012

RPI 2188

Concessão da patente

#16.1

10/19/1999

RPI 1502

Deferimento

#9.1

11/03/1998

RPI 1452

Exigência - art. 36 da LPI

#6.1

05/26/1998

RPI 1431

Solicitação de exame técnico

#4.1

09/10/1991

RPI 1084

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