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Official data from INPI

SISTEMA ADESIVO, SEPARADOR DE CÉLULAS, CÉLULA ALCALINA-ELETROLÍTICA E TUBO SEPARADOR.

Arquivada/ExtintaInvention PatentPCT · US1987000409

Application data

Number

PI8706801

Type

Invention Patent

Filing

02/23/1987

Publication

06/14/1988

PCT

US1987000409

Progress at the INPI

  1. Filing02/23/87
  2. Publication06/14/88
  3. Examination01/02/90
  4. Allowance09/08/98
  5. Grant12/29/98
  6. Expired12/05/12

The letters patent expired on 12/05/2012: 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: 06/14/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Duracell International Inc

US

See this company's full portfolio

Inventors

D. A. (pessoa física)

GB

Technical data

Priority claims

GB

8607793 · 03/27/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Notificação de entrada na fase nacional - PCT

#1.3

06/14/1988

RPI 921

Carta-patente expirada

#21.1

Patente extinta em 29/12/2008

12/05/2012

RPI 2187

Concessão da patente

#16.1

12/29/1998

RPI 1460

Deferimento

#9.1

09/08/1998

RPI 1446

Exigência - art. 36 da LPI

#6.1

09/16/1997

RPI 1398

Solicitação de exame técnico

#4.1

01/02/1990

RPI 1000

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