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Official data from INPI

PROCESSO PARA A FABRICAÇÃO DE DISPOSITIVOS ÓPTICOS, E, APARELHO PARA MOLDAR DISPOSITIVOS ÓPTICOS

PublicadaInvention Patent

Application data

Number

PI8606229

Type

Invention Patent

Filing

12/16/1986

Publication

09/29/1987

Progress at the INPI

  1. Filing12/16/86
  2. Publication09/29/87
  3. Examination02/13/90
  4. Allowance01/28/97
  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: 09/29/1987. 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

K. H. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

811.158 · 12/19/1985

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

09/29/1987

RPI 884

Pedido de patente depositado

#2.1

04/28/1987

RPI 862

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

Notificação para pagamento de retribuição

#13.1

05/06/1997

RPI 1379

Deferimento

#9.1

01/28/1997

RPI 1365

Exigência - art. 36 da LPI

#6.1

02/06/1996

RPI 1314

Exigência - art. 36 da LPI

#6.1

03/09/1993

RPI 1162

Exigência - art. 36 da LPI

#6.1

07/14/1992

RPI 1128

Solicitação de exame técnico

#4.1

02/13/1990

RPI 1006

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