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Official data from INPI

ELEMENTOS DE VIDRO TRANSPARENTES

ConcedidaInvention Patent

Application data

Number

PI7804929

Type

Invention Patent

Filing

08/01/1977

Publication

-

Progress at the INPI

  1. Filing08/01/77
  2. Publication
  3. Examination
  4. Allowance05/22/84
  5. Grant11/27/84
  6. Expired12/14/93

The letters patent expired on 12/14/1993: 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: 11/27/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

MINNESOTA MINING & MFG

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Inventors

F. B. (pessoa física)

T. C. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

11/27/1984

RPI 736

Notificação para pagamento de retribuição

#13.1

09/04/1984

RPI 724

Deferimento

#9.1

05/22/1984

RPI 709

Republicação - classificação IPC

#15.11

04/17/1984

RPI 704

Republicação - classificação IPC

#15.11

02/07/1984

RPI 694

Exigência - art. 36 da LPI

#6.1

12/27/1983

RPI 688

Conhecimento de parecer técnico

#7.1

01/25/1983

RPI 640

6.2

01/12/1982

RPI 586

Carta-patente expirada

#21.1

12/14/1993

RPI 1202

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