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Official data from INPI

CARPETE DE MECHAS COM PELOS INSERIDOS

PublicadaInvention Patent

Application data

Number

PI8802152

Type

Invention Patent

Filing

05/03/1988

Publication

12/06/1988

Progress at the INPI

  1. Filing05/03/88
  2. Publication12/06/88
  3. Examination12/26/90
  4. Allowance01/04/05
  5. Grant04/26/05
  6. Expired05/19/15

The letters patent expired on 05/19/2015: 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: 12/06/1988. 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

G. T. (pessoa física)

US

R. H. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

047,654 · 05/08/1987

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

12/06/1988

RPI 946

Pedido de patente depositado

#2.1

09/20/1988

RPI 935

Carta-patente expirada

#21.1

Patente extinta em 26/04/2015

05/19/2015

RPI 2315

16.3

Ref. RPI 1790 de 26/04/2005, quanto ao prazo de validade.

08/30/2005

RPI 1808

Concessão da patente

#16.1

04/26/2005

RPI 1790

Deferimento

#9.1

01/04/2005

RPI 1774

Exigência - art. 36 da LPI

#6.1

05/17/1994

RPI 1224

Solicitação de exame técnico

#4.1

12/26/1990

RPI 1047

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