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Official data from INPI

Lanterna elétrica.

ConcedidaInvention Patent

Application data

Number

PI8303463

Type

Invention Patent

Filing

06/28/1983

Publication

02/07/1984

Progress at the INPI

  1. Filing06/28/83
  2. Publication02/07/84
  3. Examination03/25/86
  4. Allowance05/24/88
  5. Grant03/28/89
  6. Expired07/01/08

The letters patent expired on 07/01/2008: 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: 03/28/1989. 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. H. (pessoa física)

Technical data

Priority claims

GB

8218803 · 06/29/1982

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

03/28/1989

RPI 962

Notificação para pagamento de retribuição

#13.1

09/20/1988

RPI 935

Deferimento

#9.1

05/24/1988

RPI 918

6.2

09/15/1987

RPI 882

Solicitação de exame técnico

#4.1

03/25/1986

RPI 805

Publicação do pedido de patente

#3.1

02/07/1984

RPI 694

Pedido de patente depositado

#2.1

08/09/1983

RPI 668

Republicação - classificação IPC

#15.11

Procedimento automático de reclassificação. A classificação IPC anterior era F21L 7/00.

03/27/2018

RPI 2464

Carta-patente expirada

#21.1

Patente extinta em 28/06/98

07/01/2008

RPI 1956

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