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Official data from INPI

COMPOSIÇÀO DE INTERCAMADA DE POLIVINIL-BOTIRAL PARA UMA UNIDADE DE VIDRAÇA LAMINADA

ConcedidaInvention Patent

Application data

Number

PI7900518

Type

Invention Patent

Filing

01/29/1979

Publication

-

Progress at the INPI

  1. Filing01/29/79
  2. Publication
  3. Examination
  4. Allowance10/06/87
  5. Grant06/14/88
  6. Expired05/31/94

The letters patent expired on 05/31/1994: 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

Monsanto Company

US

See this company's full portfolio

Inventors

D. C. (pessoa física)

J. S. (pessoa física)

Technical data

IPC Classification

Priority claims

US

873.346 · 01/30/1978

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

06/14/1988

RPI 921

Notificação para pagamento de retribuição

#13.1

02/09/1988

RPI 903

Deferimento

#9.1

10/06/1987

RPI 885

Conhecimento de parecer técnico

#7.1

10/04/1983

RPI 676

6.2

02/16/1982

RPI 591

Carta-patente expirada

#21.1

05/31/1994

RPI 1226

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