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Official data from INPI

CÉLULA ELETROLÍTICA COM ÂNODO E ELETROLITO GELIFICADOS E PROCESSO DE OBTENÇÃO DOS MESMOS.

ConcedidaInvention Patent

Application data

Number

PI8008481

Type

Invention Patent

Filing

12/23/1980

Publication

-

Progress at the INPI

  1. Filing12/23/80
  2. Publication
  3. Examination08/09/83
  4. Allowance04/16/85
  5. Grant02/25/86
  6. Expired03/19/96

The letters patent expired on 03/19/1996: 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: 02/25/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Duracell International Inc.

US

See this company's full portfolio

Inventors

G. J. (pessoa física)

G. T. (pessoa física)

Technical data

IPC Classification

Priority claims

US

106.996 · 12/26/1979

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

02/25/1986

RPI 801

Notificação para pagamento de retribuição

#13.1

08/06/1985

RPI 772

Deferimento

#9.1

04/16/1985

RPI 756

Exigência - art. 36 da LPI

#6.1

12/04/1984

RPI 737

Exigência - art. 36 da LPI

#6.1

01/31/1984

RPI 693

Solicitação de exame técnico

#4.1

08/09/1983

RPI 668

Carta-patente expirada

#21.1

03/19/1996

RPI 1320

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