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Official data from INPI

MATERIAL DE FOLHA, PROCESSO PARA A FORMAÇÃO DO MESMO, PEÇA DE ROUPA DESCARTÁVEL E DISCO ABRASIVO

Prazo de SigiloInvention Patent

Application data

Number

PI8902225

Type

Invention Patent

Filing

05/12/1989

Publication

01/02/1990

Progress at the INPI

  1. Filing05/12/89
  2. Publication01/02/90
  3. Examination02/25/92
  4. Allowance05/24/94
  5. Grant12/27/94
  6. Expired12/22/09

The letters patent expired on 12/22/2009: 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: 07/04/1989. 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

D. B. (pessoa física)

US

M. G. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

193,832 · 05/13/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de patente depositado

#2.1

07/04/1989

RPI 976

Carta-patente expirada

#21.1

Patente extinta em 12/05/2004

12/22/2009

RPI 2033

Concessão da patente

#16.1

12/27/1994

RPI 1256

Notificação para pagamento de retribuição

#13.1

09/27/1994

RPI 1243

Deferimento

#9.1

05/24/1994

RPI 1225

Solicitação de exame técnico

#4.1

02/25/1992

RPI 1108

Publicação do pedido de patente

#3.1

01/02/1990

RPI 1000

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