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Official data from INPI

DISPOSITIVO PARA EXTRAIR MATERIAL DE ENCHIMENTO FLUENTE ATRAVÉS DA PAREDE FLEXÍVEL DE UM SACO

Arquivada/ExtintaInvention PatentPCT · EP1990001246

Application data

Number

PI9007578

Type

Invention Patent

Filing

07/31/1990

Publication

04/14/1992

PCT

EP1990001246

Progress at the INPI

  1. Filing07/31/90
  2. Publication04/14/92
  3. Examination07/27/93
  4. Allowance06/14/94
  5. Grant03/01/95
  6. Expired06/15/10

The letters patent expired on 06/15/2010: 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: 06/15/2010. 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

W. K. (pessoa física)

DE

Technical data

IPC Classification

Priority claims

DE

P39 26 024.0 · 08/07/1989

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 31/07/2005

06/15/2010

RPI 2058

Concessão da patente

#16.1

03/01/1995

RPI 1265

Notificação para pagamento de retribuição

#13.1

10/18/1994

RPI 1246

Deferimento

#9.1

06/14/1994

RPI 1228

Solicitação de exame técnico

#4.1

07/27/1993

RPI 1182

Notificação de entrada na fase nacional - PCT

#1.3

04/14/1992

RPI 1115

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