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28 views

Missing Drawing in a 10 year old patent application

Why are the patent drawings not shown on the Google Patents page for this dismissed patent application DE 10353118 A1? Do missing drawings provide for infringement on other patents?
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1answer
37 views

my grandfather invented the first automated tea bag machine

Isn't there royalties insued by the inventors family if the patent is re-purchased? It seems The National Tea Company , not in existence, still owes my family money.
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17 views

Paten for Product Expired - can I get formulation of product?

A patent for a hair growing product has expired due to non payment of maintenance fees. Is the exact formuation of the product now available? If it's in the public domain - what does that Mean? Do I ...
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1answer
148 views

Design or utility patent? Do I need to file multiple variations to protect my idea? Do I need create an exact working example of my idea? and more

If I wanted to produce sticky fore-arm straps that wrap around the fore-arms for competitors to use in the worlds-strongest-man competition to get a better grip when they pick up big circular stones ...
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2answers
250 views

Can I file a patent for a new derivative of CHESS

I have an idea for a new derivative of chess. Its very different board game. With the movement logics modified. Though the winning is still the same (the king's death) and also the horse's move is ...
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1answer
23 views

Patent #6108955 references cited [duplicate]

When i look up patent #6108955 on the uspto site it says it is expired due to the maintenance fees not being paid. there is also a list of references cited. They seem to be similar to #6108955 but ...